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Zscaler

Zscaler

Operational

Last checked: Mar 10, 2026 08:18

Incident History (Last 30 Days)

Scheduled Minor

Mumbai VI Datacenter Scheduled Maintenance - zscalerthree.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Mumbai VI (BOM6) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalerthree.net/cenr

Maintenance Window:

Start time is March 11, 10:30 am PST (March 11, 17:30 UTC)

End time is March 11,  4:30 pm PST (March 11, 23:30 UTC)

Mar 09, 2026

23:39

Scheduled Minor

Singapore V Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscloud.net

Zscaler will be enabling IPv6 at our Singapore V (SIN5) Data Center.  During the maintenance window the services through SIN5 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 10, 10:30 am PST (March 10, 17:30 UTC)

End time is March 10, 3:30 pm PST (March 10, 22:30 UTC)

Mar 09, 2026

17:28

Scheduled Minor

Singapore V Datacenter Scheduled Maintenance - zscalerthree.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Singapore V (SIN5) data center. We expect minimal to no impact to services during the maintenance window. 

The new VIPs for Zscaler Extranet Application Support are 167.103.60.134 & 2400:7aa0:2310::3a

Please update your firewall policy rules and any upstream access lists (ACLs) to allow all IP address ranges for this DC.

For more information, please visit:

https://config.zscaler.com/zscalerthree.net/cenr

Maintenance Window:

Start time is March 10, 10:30 am PST (March 10, 17:30 UTC)

End time is March 10, 3:30 pm PST (March 10, 22:30 UTC)

  • Update 3/9/26: Correcting UTC date + Added ipv6 Extranet VIP

Mar 09, 2026

17:21

Scheduled Minor

Brussels II Datacenter Scheduled Maintenance - zscaler.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Brussels II (BRU2) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscaler.net/cenr

Maintenance Window:

Start time is March 11, 10:00 am PST (March 11, 17:00 UTC)

End time is March 11, 3:00 pm PST (March 11, 22:00 UTC)

Mar 09, 2026

16:15

Scheduled Minor

Paris IV Datacenter Scheduled Maintenance - zscaler.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Paris IV (PAR4) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscaler.net/cenr

Maintenance Window:

Start time is March 10, 10:00 am PST (March 10, 17:00 UTC)

End time is March 10, 3:00 pm PST (March 10, 22:00 UTC)

Mar 09, 2026

15:50

Resolved Minor

Scheduled Maintenance Extended - zscalerthree.net

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscalerthree.net cloud by 1 hour. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sun, 08 Mar 2026 06:54:21 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 08, 2026

06:02

Resolved Minor

Scheduled Maintenance Extended - zscloud.net

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscloud.net cloud by 1 hour. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sun, 08 Mar 2026 06:01:26 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 08, 2026

05:40

Scheduled Minor

Urgent Maintenance on Oceania and AMER datacenters for DLP services - zscaler.net

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Oceania and AMER datacenters on the zscaler.net cloud. This maintenance is scheduled for Sunday at 1:00 AM Pacific Time on Mar 8, 2026 (Sunday, Mar 8, 2026 9:00 AM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to DLP - EDM and IDM functionality during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Mar 07, 2026

21:22

Resolved Minor

Urgent Maintenance on APAC and EMEA datacenters for DLP services - zscaler.net

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the APAC and EMEA datacenters on the zscaler.net cloud. This maintenance is scheduled for Saturday at 2:00 PM Pacific Time on Mar 7, 2026 (Saturday, Mar 7, 2026 10:00 PM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to DLP - EDM and IDM functionality during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Sat, 07 Mar 2026 23:48:17 UTC

This activity has …

Mar 07, 2026

21:11

Resolved Minor

Scheduled Maintenance Extended - zscalertwo.net

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscalertwo.net cloud by 2 hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sat, 07 Mar 2026 07:46:17 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 07, 2026

06:20

Resolved Minor

Cloud Connector Repo Update - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler operations will be performing a planned Software repository update (version 1.146.5_6.2.51633) for the Cloud Connectors on March 7th, 2026 between 9 AM PST to 11 AM PST (March  7th, 2026 between 17:00 to 19:00 UTC). To minimize disruption, we will be rolling out these changes gradually to all customers in 2-3 weeks. The service upgrade will deploy in accordance with the customer configured upgrade schedule. Workloads may experience a brief connection interruption. Customers should ensure that services are configured with recommended high availability to minimize traffic disruptions.


 

Update - Sun, 08 Mar 2026 22:58:49 UTC

This activity has …

Mar 07, 2026

02:16

Resolved Minor

Kuala Lumpur II Data Center online - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Dear Zscaler Customer,

You are receiving this notice in accordance with the Zscaler Service Continuity Policy.

As part of our effort to enhance our Security Cloud’s robustness and performance, Zscaler will be bringing online a new Kuala Lumpur II (KUL2) data center. This facility will be added to the public resolution service (Auto Geo Proximity) on March 9, 2026

What if I have more questions? 

Contact Zscaler Support via the “Support” link at the top-right of the Zscaler Administration U.I page.

Or contact us by phone:

USA Toll-Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Update - Mon, 09 Mar 2026 20:37:17 UTC

This activity has been completed. Please contact Zscaler …

Mar 06, 2026

17:53

Investigating Minor

Improved Input Validation for User-Editable Text Fields - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net, app.zsdpc.net, app.eu.zsdpc.net, zpabeta.net, zsdkone.net, zscalerrisk.net, admin.zscaleranalytics.net, zslogin.net

We’ve enhanced validation for certain user-editable fields to ensure user-provided values remain plain text and render consistently across the UI (including tables, tooltips, and logs).

What Changed

ZIA now enforces stricter validation on specific text fields to prevent the use of:

  • HTML / markup
  • HTML-encoded markup / HTML entities (including entity-based representations of special characters or whitespace)

If disallowed input is detected, the API will reject the request with HTTP 400 (Bad Request).

Impacted Areas (where this validation applies)

Impacted AreasKB DocumentWebhook nameshttps://help.zscaler.com/zia/adding-webhookPAC file names & descriptionshttps://help.zscaler.com/zia/about-hosted-pac-filesStatic IP descriptions https://help.zscaler.com/zia/self-provisioning-static-ip-addressesURLs in URL categorieshttps://help.zscaler.com/zia/configuring-custom-url-categoriesExtranet nameshttps://help.zscaler.com/zia/configuring-extranetLocation group nameshttps://help.zscaler.com/zia/configuring-dynamic-location-groups 

What Is Not Allowed (Rejected with HTTP …

Mar 06, 2026

14:06

Monitoring Major

Degradation in DLP functionality - zscalertwo.net

Zscaler has detected an issue with its DLP - EDM and IDM functionality on the zscalertwo.net Cloud. A subset of customers in the AMER region may experience partial disruption of DLP - EDM and IDM functionality, along with performance degradation due to increased latency in the DLP inspection flow.

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root cause: A software defect affecting components of the Data Loss Prevention …

Mar 06, 2026

05:22

Resolved Minor

Scheduled Maintenance Extended - EMEA Region - zscloud.net

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the EMEA region's datacenters on zscloud.net cloud by 3 hours. During this extended maintenance window the ZIA Admin Portal, including policy management and reporting access, and new user authentication should be successful. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed.

Mar 05, 2026

22:49

Resolved Minor

Vienna I Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net

Zscaler will be enabling IPv6 at our Vienna I (VIE1) Data Center.  During the maintenance window the services through VIE1 Data Center will be restarted in phases to minimize the service impact.

Other Zscaler sites and Zscaler Services will continue to operate normally.

Maintenance Window:

Start time is March 9, 1:00 pm PST (March 9, 20:00 UTC)

End time is March 9, 7:00 pm PST (March 10, 2:00 UTC)

Update - Tue, 10 Mar 2026 00:56:53 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 05, 2026

21:26

Monitoring Minor

Washington DC IV Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler has detected an issue with its Washington DC IV datacenter and is currently investigating the matter. Some customers may encounter difficulties with DNS resolution. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Latest Update - Thu, 05 …

Mar 05, 2026

16:14

Scheduled Minor

Upcoming New Data Centers and Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Dear Zscaler Customer,

In accordance with Zscaler Service Continuity Policy and per email notification sent on March 3, 2026, we would like to notify you of the upcoming new data centers and expansions at the locations listed below. These would be available anytime on or after May 2, 2026; 60 days or more from the date the first email notification is sent.

Please update your firewall policy rules and any upstream Access Control Lists (ACLs) to allow the new IP address ranges to avoid any service disruption.

RegionLocationCIDRNotesAmericasBogota II205.220.57.0/24New RS* data centerAmericasBogota II205.220.68.0/24New RS* data centerAPACChennai II205.220.122.0/23Expansion of existing data centerAPACChennai II205.220.124.0/23Expansion …

Mar 03, 2026

23:59

Resolved Minor

Mumbai VI Datacenter Scheduled Maintenance - zscaler.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Mumbai VI (BOM6) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscaler.net/cenr

Maintenance Window:

Start time is March 6, 10:00 am PST (March 6, 18:00 UTC)

End time is March 6, 2:00 pm PST (March 6, 22:00 UTC)

Update - Fri, 06 Mar 2026 22:28:01 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 02, 2026

23:05

Scheduled Minor

Reminder Notification for Upcoming Data Center Expansions - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Dear Customer, 

In accordance with the Zscaler Service Continuity Policy and as previously announced via email notification and Trust on January 16, 2026, we would like to remind you of the upcoming data center expansions at the locations listed below. These would be effective anytime on or after March 17, 2026.

Please update your firewall policy rules and any upstream access control lists to allow the new IP address ranges to avoid any service disruption.

RegionLocationCIDRNotesAPACHong Kong III101.2.242.0/23Expansion of existing DCEMEAHelsinki I159.254.210.0/23Expansion of existing DCEMEAMunich I159.254.212.0/22Expansion of existing DCEMEAStockholm III165.225.238.0/23Expansion of existing DC

We recommend that you add the IP address ranges listed in …

Mar 02, 2026

21:00

Monitoring Major

VPN Legacy Application Issue - private.zscaler.com

Zscaler continues to monitor the previously reported service disruption impacting private.zscaler.com, affecting access to VPN Legacy Applications for a subset of users.

Initial telemetry and early recovery indicators suggested that service behavior had stabilized; however, subsequent monitoring has confirmed that intermittent impact remains for a subset of users. According to the cloud provider’s status page, two Availability Zones (mec1-az2 and mec1-az3) in the AWS ME-CENTRAL-1 Region are currently experiencing impairment, and AWS is actively working toward full restoration.

Customers may refer to the cloud provider’s status page for additional updates related to the underlying infrastructure Status Page.

Zscaler continues close …

Mar 02, 2026

20:05

Resolved Minor

Brussels II Datacenter Issue - zscaler.net, zscloud.net

Zscaler has detected an issue with our Brussels II datacenter on the zscaler.net and the zscloud.net clouds, and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Latest Update - Tue, 10 Mar 2026 …

Mar 02, 2026

06:25

Resolved Major

Cloud Browser Isolation service impacted in Middle East (UAE) - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler has identified an issue with Cloud Browser Isolation (CBI) impacting customers in Middle East (UAE). Affected customers may experience difficulties when attempting to create new sessions.

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root cause: A disruption to AWS infrastructure services in the UAE region temporarily impacted the availability of the Cloud Browser Isolation (CBI) service hosted in that region.

Latest Update - Thu, 05 Mar 2026 …

Mar 01, 2026

17:16

Resolved Minor

VPN Legacy Application Issue - private.zscaler.com

Zscaler is currently investigating an issue affecting Legacy VPN application services for customers in the UAE region. Initial findings indicate that this disruption is related to an AWS service issue within Availability Zone mec1-az2 in the ME-CENTRAL-1 region.

Our operations team is monitoring the situation closely and working toward mitigation. We will provide further updates as more information becomes available.

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Latest …

Mar 01, 2026

17:11

Resolved Minor

Scheduled Maintenance Extended - zscloud.net

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscloud.net cloud by 2 hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sun, 01 Mar 2026 07:07:16 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Mar 01, 2026

05:23

Monitoring Minor

Middle East Situation and Elevated Monitoring Posture - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net

Zscaler is aware of ongoing geopolitical developments in the Middle East that may impact regional internet connectivity and routing. As part of our standard operational practices, Zscaler is closely monitoring global network conditions and internet infrastructure stability to help maintain continued service reliability for our customers.

As of February 28, 2026, Zscaler services are operating normally, and we have not observed any impact to platform availability, performance, or security services.

Zscaler continuously monitors external factors that may influence internet routing, regional connectivity, and cybersecurity risk levels. In light of current conditions, we have increased operational monitoring and readiness measures across our global …

Feb 28, 2026

22:11

Scheduled Minor

Urgent Maintenance - zscalerone.net

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the zscalerone.net cloud. This maintenance is scheduled for Sunday at 1:00 AM Pacific Time on March 1, 2026 (Sunday, March 1, 2026 9:00 AM UTC), and can take up to 4 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Feb 28, 2026

20:33

Resolved Minor

Urgent Maintenance on Capetown, Capetown IV, Johannesburg II, Johannesburg III, Lagos, London III, and New York III datacenters - zscalerone.net

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Capetown, Capetown IV, Johannesburg II, Johannesburg III, Lagos, London III, and New York III datacenters on the zscalerone.net cloud. This maintenance is scheduled for Saturday at 2:00 PM Pacific Time on February 28, 2026 (Saturday, February 28, 2026 10:00 PM UTC), and can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Sat, 28 …

Feb 28, 2026

20:24

Resolved Critical

Beijing III, Shanghai Datacenter Issue - zscaler.net

Zscaler has detected an issue with our Beijing III, Shanghai datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root cause: An external network connectivity issue affecting international internet paths caused certain services …

Feb 28, 2026

13:41

Resolved Major

Connectivity Issues Affecting India Data Centers - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Zscaler has detected an issue with its Chennai II, Hyderabad I, Kolkata I, Mumbai VI, Mumbai VII, New Delhi I datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root Cause: The incident …

Feb 28, 2026

10:17

Resolved Minor

Scheduled Maintenance Extended - zscaler.net

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscaler.net cloud by 4 hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Latest Update - Sat, 28 Feb 2026 11:27:44 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sat, 28 Feb 2026 09:15:38 UTC

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscaler.net cloud by 3 hours.

Update - Sat, 28 Feb 2026 …

Feb 28, 2026

05:26

Resolved Minor

Osaka I Datacenter Scheduled Maintenance - zscaler.net, zscalerthree.net

Zscaler will be expanding its global data center footprint and performing maintenance at our Osaka I (OSA1) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscaler.net/cenr

https://config.zscaler.com/zscalerthree.net/cenr

Maintenance Window:

Start time is March 4, 9:00 am PST (March 4, 17:00 UTC)

End time is March 4, 3:00 pm PST (March 4, 23:00 UTC)

  • Update 3/3/26: Corrected UTC date & time
  • Update 3/4/26: Extending Maintenance

Update - Thu, 05 Mar 2026 02:04:55 UTC

This activity has been completed. …

Feb 28, 2026

01:54

Resolved Minor

Denver III Datacenter Scheduled Maintenance - zscalertwo.net

Zscaler will be expanding its global data center footprint and performing maintenance at our Denver III (DEN3) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalertwo.net/cenr

Maintenance Window:

Start time is March 3, 5:00 pm PST (March 4, 1:00 UTC)

End time is March 3, 11:00 pm PST (March 4, 7:00 UTC)

Update - Wed, 04 Mar 2026 06:44:10 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 28, 2026

01:24

Resolved Minor

Vienna I Datacenter Scheduled Maintenance - zscaler.net, zscalerthree.net

Zscaler will be performing planned maintenance at our Vienna I (VIE1) Data Center.  
We expect minimal to no impact to services during the maintenance window.

Maintenance Window:
Start time is March 3, 12:00 pm PST (March 3, 20:00 UTC)
End time is March 3, 5:00 pm PST (March 4, 1:00 UTC)
 

Update - Tue, 03 Mar 2026 21:29:10 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 27, 2026

22:08

Resolved Minor

Connectivity Issues Affecting India Data Centers - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Zscaler has detected an issue with our Chennai II, Hyderabad I, Kolkata I, Mumbai VI, Mumbai VII, New Delhi I datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root Cause: The incident …

Feb 27, 2026

21:11

Resolved Minor

Tianjin Datacenter Issue - zscalertwo.net

Zscaler has detected an issue with its Tianjin datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root Cause: The issue was caused by a brief interruption to an IPSec traffic processing …

Feb 27, 2026

05:40

Resolved Critical

Sao Paulo II Datacenter Issue - zscloud.net

Zscaler has detected an issue with its Sao Paulo II datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root Cause: Root cause of the issue is attributed to a IPSEC traffic …

Feb 27, 2026

03:44

Resolved Minor

Brussels (BRU2) Datacenter Network Maintenance - zscaler.net, zscloud.net

Zscaler will be performing hardware maintenance in the Brussels II (BRU2) Datacenter.

Maintenance window,
Start: 2026-03-02 03:00 UTC
End:   2026-03-02 05:00 UTC
(2026-03-02 04:00 - 2026-03-02 06:00 Local time)

Update - Mon, 02 Mar 2026 05:29:35 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 27, 2026

02:04

Resolved Minor

Manchester II Datacenter Scheduled Maintenance - zscaler.net, zscloud.net

Zscaler will be expanding its global data center footprint and performing maintenance at our Manchester II (MAN2) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscaler.net/cenr

https://config.zscaler.com/zscloud.net/cenr

Maintenance Window:

Start time is March 2, 10:00 am PST (March 2, 18:00 UTC)

End time is March 2, 4:00 pm PST (March 3, 00:00 UTC)

Update - Mon, 02 Mar 2026 23:39:04 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 26, 2026

21:36

Resolved Critical

Urgent Maintenance - zscalerone.net

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on zscalerone.net cloud. This maintenance is scheduled for Friday at 12:00 AM Pacific Time on February 27, 2026 (Friday, February 27, 2026 8:00 AM UTC), and can take up to 4 hours to complete.

During maintenance, which includes the control plane, the Admin Portal might be temporarily placed into read-only mode, making the following unavailable: configuration changes, new user provisioning, and existing user updates through SCIM, LDAP, and SAML. A brief impact to new user authentication might occur. However, all the logs that are collected during this period will …

Feb 26, 2026

20:23

Resolved Minor

Chicago II (CHI2), San Francisco IV (SJC4) and Los Angeles II (QLA2) Datacenter Issue - zscaler.net, zscalertwo.net

Zscaler is aware of a issue with its Chicago II datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root Cause: The issue was caused by a configuration error introduced during a recent …

Feb 26, 2026

17:23

Resolved Minor

Urgent Maintenance on Los Angeles II datacenter. - zscaler.net

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Los Angeles II on the zscaler.net cloud. This maintenance can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Thu, 26 Feb 2026 09:12:45 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 26, 2026

06:09

Resolved Minor

Urgent Maintenance on Chicago II, San Francisco IV datacenters. - zscalertwo.net

The Zscaler Site Reliability Engineering team will be performing an urgent maintenance on the Chicago II, San Francisco IV on the zscalertwo.net cloud. This maintenance can take up to 3 hours to complete. We expect minimal to no impact to services during the maintenance window. All logs will be collected and available after maintenance is complete. Please contact Zscaler Support if you have additional questions.

Update - Thu, 26 Feb 2026 09:12:32 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 26, 2026

06:02

Resolved Minor

Chennai II Datacenter Scheduled Maintenance - zscaler.net

Zscaler will be expanding its global data center footprint and performing maintenance at our Chennai II (MAA2) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscaler.net/cenr

Maintenance Window:

Start time is March 2, 9:00 am PST (March 2,, 17:00 UTC)

End time is March 2,, 2:00 pm PST (March 2,, 22:00 UTC)

  • Update 2/26: Maintenance Date Update

Update - Mon, 02 Mar 2026 22:09:36 UTC

This activity has been completed. Please contact Zscaler Support if you …

Feb 26, 2026

00:43

Identified Critical

Zscaler Client Connector for VDI – Version 1.7 Upgrade Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler is investigating an issue affecting customers who upgraded the Zscaler Client Connector for Virtual Desktop Infrastructure (VDI) to versions 1.7.0.4, 1.7.0.6, or 1.7.0.7.

Following the upgrade, some VDI instances may remain in an “off” state due to authentication failures. As a result, impacted VDIs may be unable to establish a connection to the Zscaler service.

Zscaler has identified the issue and validated that reverting to version 1.6 restores expected functionality. A permanent fix is currently under validation.

Who is impacted?

You may be impacted if:

  • You are using Zscaler Client Connector (ZCC) for VDI
  • You upgraded to version 1.7.0.4, 1.7.0.6, or 1.7.0.7
  • Your VDI instances are showing an “off” state and failing …

Feb 25, 2026

20:06

Resolved Minor

San Francisco IV (SJC4) Datacenter Network Maintenance - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler will be performing hardware maintenance in San Francisco IV (SJC4) Datacenter.

Maintenance window:
   Start: 2026-02-27 02:00 UTC
   End:   2026-02-27 04:00 UTC
   (Local Time 2026-02-26 18:00 - 2026-02-26 20:00)

Update - Mon, 02 Mar 2026 14:30:22 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 25, 2026

02:47

Resolved Major

Zscaler Client Connector Enrollment Failures - zscalertwo.net

Zscaler is aware of an issue impacting Zscaler Client Connector (ZCC) enrollment, where some users may encounter the error: "Zscaler Client Connector was unable to enroll at this time."

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root cause: A temporary service condition within the Zscaler control plane enrollment service resulted in intermittent delays for Zscaler Client Connector (ZCC) new device enrollment and sign-in requests during the impact window. …

Feb 24, 2026

22:28

Scheduled Major

Tel Aviv II (TLV2) Datacenter Network Maintenance - zscloud.net

Zscaler will be performing urgent hardware maintenance in the Tel Aviv II (TLV2) Datacenter.

Maintenance window,
Start: 2026-27-2 21:00 IST
End: 2026-27-2 23:00 IST
(i.e. 2026-27-2 19:00 - 21:00 UTC)

During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

Feb 24, 2026

21:56

Resolved Minor

Endpoint Data Loss Prevention (DLP) Service Issues - zscaler.net, zscloud.net, zscalerthree.net

Zscaler has identified an issue with the Endpoint Data Loss Prevention (DLP) and incident logging services on the zscaler.net, zscloud.net, zscalerthree.net Cloud. As a result, some customers may experience issues with enforcing new policies. However, please note that existing policies are still being enforced as expected. The impact is limited to some customers.

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root Cause: A known software defect caused …

Feb 24, 2026

13:42

Resolved Minor

Vienna I Datacenter Scheduled Maintenance - zscloud.net

Zscaler will be performing planned maintenance at our Vienna I (VIE1) Data Center.  

We expect minimal to no impact to services during the maintenance window.

Maintenance Window:

Start time is February 26, 12:00 pm PST (February 26, 20:00 UTC)

End time is February 26, 7:00 pm PST (February 27, 3:00 UTC)

  • Update 2/26: Extended Maintenance

Update - Fri, 27 Feb 2026 02:46:58 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 24, 2026

00:28

Resolved Minor

Melbourne II Datacenter Scheduled Maintenance - zscalerthree.net

Zscaler will be expanding its global data center footprint and performing maintenance at our Melbourne II (MEL2) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalerthree.net/cenr

Maintenance Window:

Start time is February 25, 6:00 am PST (February 25, 14:00 UTC)

End time is February 25, 11:00 am PST (February 25, 19:00 UTC)

Update - Wed, 25 Feb 2026 18:06:56 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 23, 2026

21:17

Scheduled Major

China Premium Access Plus Datacenter (Beijing V) Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Beijing V DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus Services within this data center may experience intermittent disconnections.

Start Time: 2026-03-20 16:00:00 UTC
End Time: 2026-03-20 20:00:00 UTC
(Datacenter Local Time  2026-03-21 00:00 - 2026-03-21 04:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Feb 23, 2026

17:57

Resolved Minor

Tokyo V (TYO5) Datacenter Network Maintenance - zscalerthree.net

Zscaler will be performing hardware maintenance in Tokyo V (TYO5) Datacenter.

Scheduled Maintenance window,
   Start: 2026-02-24 15:00 UTC
   End:   2026-02-24 19:00 UTC
   (Local Time 2026-02-25 00:00 - 2026-02-25 04:00 JST)

Update - Tue, 24 Feb 2026 16:49:23 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 23, 2026

09:58

Resolved Minor

Hyderabad I Datacenter Scheduled Maintenance - zscalertwo.net

Zscaler will be expanding its global data center footprint and performing maintenance at our Hyderabad I (HYD1) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalertwo.net/cenr

Maintenance Window:

Start time is February 24, 9:00 am PST (February 24, 17:00 UTC)

End time is February 24, 4:00 pm PST (February 25,  00:00 UTC)

Update - Wed, 25 Feb 2026 00:08:32 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 21, 2026

05:32

Resolved Minor

Frankfurt VI Datacenter Maintenance - zscaler.net

Zscaler will be expanding its global data center footprint and performing maintenance at our Frankfurt VI (FRA6) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscaler.net/cenr

Maintenance Window:

Start time is February 24, 9:00 am PST (February 24, 17:00 UTC)

End time is February 24, 6:00 pm PST (February 25,  2:00 UTC)

  • Update 2/24: Maintenance Extended
  • Update 2/24: Maintenance Extended

Update - Wed, 25 Feb 2026 01:55:06 UTC

This activity has been completed. Please contact Zscaler Support …

Feb 20, 2026

21:36

Resolved Minor

Beijing IV, Beijing V, Shanghai VI Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler has detected an issue with our Beijing IV, Beijing V, Shanghai VI datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root Cause: Upstream provider experienced an congestion.

Latest Update - Fri, …

Feb 20, 2026

13:31

Resolved Minor

Beijing Datacenter Issue - zscaler.net, zscloud.net, zscalerthree.net

Zscaler has detected an issue with its Beijing datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Latest Update - Fri, 20 Feb 2026 20:30:07 UTC

Following the actions previously taken by Zscaler, …

Feb 20, 2026

13:20

Resolved Major

Emergency Rio de Janeiro I (RIO1) Datacenter Network Maintenance - zscaler.net

Zscaler will be performing Emergency hardware maintenance in the Rio de Janeiro I (RIO1) Datacenter.

Maintenance window,
Start: 2026-19-2 19:00 GMT-3
End: 2026-19-2 21:00 GMT-3
(i.e. 2026-19-2 22:00 - 2026-19-2 00:00 UTC)

During the maintenance, traffic will failover to redundant devices in the same datacenter. However, intermittent connections and connection reestablishment may be observed.

Update - Thu, 19 Feb 2026 22:46:11 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 19, 2026

20:02

Resolved Major

China Premium Access Plus Datacenters (Beijing V & Shanghai VI) Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Beijing V & Shanghai VI DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus Services within these data centres may experience intermittent disconnections.

Start Time: 2026-02-27 14:00:00 UTC
End Time: 2026-02-27 17:00:00 UTC
(Datacenter Local Time  2026-02-27 22:00 - 2026-02-28 01:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Update - Fri, 27 Feb 2026 22:11:33 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 19, 2026

00:40

Resolved Minor

Dallas I Datacenter Urgent Maintenance - zscalertwo.net

Zscaler will be expanding its global data center footprint and performing urgent maintenance at our Dallas I (DFW1) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalertwo.net/cenr

Maintenance Window:

Start time is February 18, 5:00 pm PST (February 19, 1:00 UTC)

End time is February 18, 9:00 pm PST (February 19, 5:00 UTC)

Update - Thu, 19 Feb 2026 05:28:28 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 18, 2026

22:59

Resolved Minor

Mumbai VI Datacenter Scheduled Maintenance - zscalertwo.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Mumbai VI (BOM6) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalertwo.net/cenr

Maintenance Window:

Start time is February 19, 2:00 pm PST (February 19, 22:00 UTC)

End time is February 19, 6:00 pm PST (February 20, 2:00 UTC)

Update - Thu, 19 Feb 2026 23:59:56 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 18, 2026

22:02

Resolved Minor

New Delhi I Datacenter Scheduled Maintenance - zscalertwo.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our New Delhi I (DEL1) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalertwo.net/cenr

Maintenance Window:

Start time is February 20, 10:00 am PST (February 20, 18:00 UTC)

End time is February 20, 3:00 pm PST (February 20, 23:00 UTC)

  • Update 2/18/26: Rescheduled to new date/time

Update - Fri, 20 Feb 2026 21:05:25 UTC

This activity has been completed. Please contact Zscaler …

Feb 18, 2026

20:52

Resolved Minor

Santiago II Data Center online - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Dear Zscaler Customer,

You are receiving this notice in accordance with the Zscaler Service Continuity Policy.

As part of our effort to enhance our Security Cloud’s robustness and performance, Zscaler are bringing online a new Santiago II (SCL2) data center. This facility will not be added to the public resolution service (Auto Geo Proximity Disabled). 

What if I have more questions? 

Contact Zscaler Support via the “Support” link at the top-right of the Zscaler Administration U.I page.

Or contact us by phone:

USA Toll-Free: +1-844-971-0010

Global Direct: +1-408-752-5885

Update - Wed, 18 Feb 2026 19:54:46 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 18, 2026

19:53

Resolved Minor

Kolkata I Data Center online - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Dear Zscaler Customer,

You are receiving this notice in accordance with the Zscaler Service Continuity Policy.

As part of our effort to enhance our Security Cloud’s robustness and performance, Zscaler will be bringing online a new Kolkata I (CCU1) data center. This facility will be added to the public resolution service (Auto Geo Proximity) on February 20, 2026

What if I have more questions? 

Contact Zscaler Support via the “Support” link at the top-right of the Zscaler Administration U.I page.

Or contact us by phone:

USA Toll-Free: +1-844-971-0010

Global Direct: +1-408-752-5885

  • Update 2/20: Maintenance rescheduled
  • Update 2/20: Maintenance extended

Update - Sat, 21 Feb 2026 05:25:44 UTC

This activity has been completed. Please …

Feb 18, 2026

19:51

Resolved Minor

New York IV (NYC4) Datacenter Network Maintenance - zscalerthree.net

Zscaler will be performing hardware maintenance in the New York IV (NYC4) Datacenter.

Maintenance window,
Start: 2026-02-20 00:00 EST
End: 2026-02-20 02:00 EST
(i.e. 2026-02-20 05:00 - 2026-02-20 07:00 UTC)

Update - Fri, 20 Feb 2026 06:46:04 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 18, 2026

13:21

Resolved Minor

Administration UI Issue - zscalertwo.net

Zscaler has detected an issue with the administration UI on its zscalertwo.net Cloud. To assist with recovery, the Admin UI has been placed into Read-Only Mode. Your organization's policies are currently being enforced. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Latest Update - Wed, 18 Feb 2026 14:56:50 UTC

Following the actions previously taken by Zscaler, the incident has been resolved. Our systems remain fully operational, and we …

Feb 18, 2026

09:16

Resolved Minor

Chicago 1 Datacenter Emergency Maintenance - zscalertwo.net

Zscaler will be expanding its global data center footprint and performing an emergency maintenance at our Chicago1 (CHI1)  data center. We expect minimal to no impact to services during the maintenance window.

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC.

For more information, please visit:
https://config.zscaler.com/zscalertwo.net/cenr


Maintenance Window:

Start time is February 17, 9:00 pm PST (February 18, 5:00 UTC)

End time is February 18, 12:00 am PST (February 18, 8:00 UTC)

Update - Wed, 18 Feb 2026 06:28:12 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 18, 2026

04:16

Scheduled Minor

Mumbai VI Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler will be enabling IPv6 at our Mumbai VI (BOM6) Data Center.  During the maintenance window the services through BOM6 Data Center will be restarted in phases to minimize the service impact.

Maintenance Window:

Start time is March 13, 11:30 am PST (March 13, 18:30 UTC)

End time is March 13, 5:30 pm PST (March 14, 00:30 UTC)

  • Update 2/18/26: Maintenance Extended
  • Update 2/18/26: Maintenance Postponed - TBA
  • Update 3/6/26: Maintenance Scheduled & verbiage change

Feb 17, 2026

19:28

Resolved Minor

Device registration issues for Zscaler Client Connector - zscalertwo.net, zscalerthree.net

Zscaler has detected an issue with the Zscaler Client Connector Portal and device registration failure on its zscalertwo.net, zscalerthree.net Cloud. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root cause: The issue was caused by a configuration issue on a limited set of Mobile Admin nodes that temporarily disrupted their connectivity with the Central Authority (CA), resulting in brief Zscaler Client Connector registration failures.

Latest Update - Wed, 18 …

Feb 17, 2026

19:16

Resolved Minor

New Delhi I Datacenter Scheduled Maintenance - zscaler.net, zscloud.net, zscalerthree.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our New Delhi I (DEL1) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalerthree.net/cenr

https://config.zscaler.com/zscaler.net/cenr

https://config.zscaler.com/zscloud.net/cenr

Maintenance Window:

Start time is February 18, 10:00 am PST (February 18, 18:00 UTC)

End time is February 18, 3:00 pm PST (February 18, 23:00 UTC)

  • Update 2/17/26: Corrected cloud

Update - Wed, 18 Feb 2026 22:13:08 UTC

This activity has been completed. Please contact Zscaler …

Feb 17, 2026

18:03

Resolved Minor

Washington DC Issue - zscalertwo.net

Zscaler has detected an issue with our Washington DC datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root cause- The issue occurred due to irregular traffic forwarding behavior.

Latest Update - Wed, …

Feb 17, 2026

05:03

Resolved Minor

User Authentication Issues - zscalertwo.net

Zscaler has detected an issue with the user authentication on its zscalertwo.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root cause: Preliminary findings indicate that a temporary service routing issue delayed the distribution of updated security and access policies. Traffic continued to flow during this period, and policy propagation returned to normal once routing stabilized.

Latest Update - Mon, 16 Feb 2026 22:40:22 UTC

Following the actions previously …

Feb 16, 2026

17:11

Resolved Minor

Zscaler Client Connector-Based End User Notifications Issue - zscloud.net, zscalerthree.net

Zscaler has detected an issue with Zscaler Client Connector-Based End User Notifications on its zscloud.net, zscalerthree.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Update - Mon, 16 Feb 2026 06:57:02 UTC

Zscaler has implemented mitigation measures to address the issue. This incident is now resolved

Feb 16, 2026

06:43

Resolved Minor

Munich I Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler has detected an issue with its Munich I datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Update - Mon, 16 Feb 2026 04:03:34 UTC

The incident has been resolved without any …

Feb 16, 2026

04:03

Resolved Minor

Scheduled Maintenance Extended - zscloud.net

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscloud.net cloud by 1 hour. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

 

Update - Sun, 15 Feb 2026 06:29:35 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 15, 2026

05:46

Resolved Minor

Scheduled Maintenance Extended - zdxcloud.net

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zdxcloud.net cloud by 90 minutes. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sat, 14 Feb 2026 17:45:34 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 14, 2026

16:45

Resolved Minor

Scheduled Maintenance Extended - zscalertwo.net

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscalertwo.net cloud by 2 hours. As part of our standard maintenance process, all logs will be collected and available after maintenance has been completed. Please contact Zscaler Support if you have additional questions.

Latest Update - Sat, 14 Feb 2026 09:50:07 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Update - Sat, 14 Feb 2026 07:51:22 UTC

The Zscaler Site Reliability Engineering team will be extending the scheduled maintenance of the zscalertwo.net cloud by 3 hours.

Update - Sat, 14 Feb 2026 …

Feb 14, 2026

05:16

Resolved Critical

ZPA Logging zone Maintenance - private.zscaler.com

We will be performing routine maintenance on our logging infrastructure in the Prod DE2 Zones Logging Zones to enhance availability and resiliency.  Some customers may witness below impact during this maintenance window:

  • Admin UI dashboards and diagnostics may display incomplete data temporarily.
  • If alerts are configured for these components, false events may be triggered.
  • Nanolog enabled customer will see timeouts on the dashboards.

Important Note:This maintenance will not impact live traffic. ZCC enrollment and ZPA logins will remain unaffected, and all services will continue to operate normally

Update - Sat, 14 Feb 2026 15:03:51 UTC

This activity has been completed. Please contact Zscaler Support if you have additional …

Feb 14, 2026

03:03

Resolved Minor

Dallas II Datacenter Scheduled Maintenance - zscalertwo.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Dallas II (DFW2) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalertwo.net/cenr

Maintenance Window:

Start time is February 15, 6:00 pm PST (February 16, 2:00 UTC)

End time is February 16, 12:00 am PST (February 16, 8:00 UTC)

16 Feb 2026 - Extending Trust for 2 hours. 

Update - Mon, 16 Feb 2026 08:40:37 UTC

This activity has been completed. Please …

Feb 13, 2026

23:07

Resolved Minor

Atlanta II Datacenter Scheduled Maintenance - zscalertwo.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Atlanta II (ATL2) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalertwo.net/cenr

Maintenance Window:

Start time is February 15, 6:00 pm PST (February 16, 2:00 UTC)

End time is February 15, 10:00 pm PST (February 16, 6:00 UTC)

Update - Mon, 16 Feb 2026 06:10:08 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 13, 2026

23:03

Resolved Minor

Capetown IV Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler has detected an issue with its Capetown IV datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root cause: An upstream provider experienced an issue impacting international connectivity in Europe.

Latest Update …

Feb 13, 2026

10:58

Resolved Minor

User Authentication Issue on Mumbai VI, Chennai II, and Hyderabad I Datacenters. - zscaler.net

Zscaler has detected an issue with its Mumbai VI, Chennai II, and Hyderabad I datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC or any other alternate DC. For more information, please refer to the following support article. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root Cause: A subset of PSEs experienced connectivity issues …

Feb 12, 2026

08:13

Resolved Minor

Sandbox and Site Review Issue - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler has detected an issue with its zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net Cloud. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root cause- Issue occurred due to a recent upgrade that caused a configuration issue.

Latest Update - Thu, 12 Feb 2026 12:02:05 UTC

Based on our continuous monitoring and health checks, the issue is no longer present and services are working as expected. This incident is now resolved.

Update …

Feb 12, 2026

07:56

Resolved Minor

Reporting and Logging Issue - zscloud.net

Zscaler has detected an issue with Reporting and Logging on its zscloud.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root cause-  The issue occurred due to a configuration issue, causing delays in log processing and log availability.

Latest Update - Mon, 16 Feb 2026 08:35:39 UTC

Zscaler deployed a permanent fix during the weekend maintenance window to address the issue. Based on continuous monitoring and health checks, the …

Feb 12, 2026

06:38

Resolved Minor

Reporting and Logging Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler has detected an issue with Reporting and Logging on its zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net Cloud. 

We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Root Cause: Network routing packet loss on certain paths caused web log performance degradation for some traffic patterns.

Latest Update - Thu, 12 Feb 2026 04:41:50 UTC

Zscaler is observing service recovery following a network routing issue that impacted performance for some traffic patterns. The …

Feb 12, 2026

02:42

Scheduled Major

China Premium Access Plus Beijing V Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Beijing V DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus Services within these data centres may experience intermittent disconnections.

Start Time: 2026-05-15 14:00:00 UTC
End Time: 2026-05-16 02:00:00 UTC
(Datacenter Local Time  2026-05-15 22:00 - 2026-05-16 10:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Feb 12, 2026

00:32

Scheduled Major

China Premium Access Plus Beijing V Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Beijing V DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus Services within these data centres may experience intermittent disconnections.

Start Time: 2026-05-08 14:00:00 UTC
End Time: 2026-05-09 02:00:00 UTC
(Datacenter Local Time  2026-05-08 22:00 - 2026-05-09 10:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Feb 12, 2026

00:29

Scheduled Major

China Premium Access Plus Beijing V Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Beijing V DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus Services within these data centres may experience intermittent disconnections.

Start Time: 2026-04-17 14:00:00 UTC
End Time: 2026-04-18 02:00:00 UTC
(Datacenter Local Time  2026-04-17 22:00 - 2026-04-18 10:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Feb 12, 2026

00:26

Scheduled Major

China Premium Access Plus Beijing V Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Beijing V DC network providers have advised maintenance work as below. During the maintenance window, China Premium Access Plus Services within these data centres may experience intermittent disconnections.

Start Time: 2026-04-10 14:00:00 UTC
End Time: 2026-04-11 02:00:00 UTC
(Datacenter Local Time  2026-04-10 22:00 - 2026-04-11 10:00 China Standard Time (UTC+8:00))

Reason of Maintenance: Provider advised maintenance.
Impact During Maintenance: Intermittent connectivity might be observed during the maintenance period

Feb 12, 2026

00:23

Resolved Minor

Website Accessibility and Email Delivery Degradation in the US and EMEA Data Centers for a Public IP Subnet - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler is aware of and currently investigating website accessibility and email delivery degradation associated with an external reputation-based filtering service affecting a public IP subnet range. The impacted IP subnet has been flagged by a third-party reputation provider, which is preventing access to certain websites and causing email delivery failures to some destinations. Zscaler is actively engaged with the third-party reputation provider to expedite removal of the impacted subnet. At this time, there is no estimated time to resolution; however, mitigation actions are being evaluated to reduce customer impact.

Zscaler continues to closely monitor the situation and will provide updates as …

Feb 11, 2026

23:54

Scheduled Minor

Dallas II Datacenter Scheduled Maintenance - zscalertwo.net

Zscaler will be performing planned maintenance at our Dallas II (DFW2) Data Center.  

We expect minimal to no impact to services during the maintenance window.

Maintenance Window:

Start time is February 15, 5:00 pm PST (February 16, 1:00 UTC)

End time is February 15, 10:00 pm PST (February 16, 6:00 UTC)

Feb 11, 2026

17:56

Resolved Minor

DNS Update for Outbound Email DLP - zscaler.net, zscalertwo.net, zscalerthree.net

Zscaler will be moving outbound Email DLP traffic for the securemail.<cloudname> domain to previously advertised networks. For details, refer to config.zscaler.com/zscaler.net/email-dlp.

What is changing? 

DNS resolution for securemail.<cloudname> will be updated to point to VIPs that are part of the subnets mentioned in the above article.

Who is impacted?
This change impacts customers sending outbound Google Workspace (G Suite) email through Zscaler SMTP egress IP ranges who previously updated their configuration to use in.securemail.<cloudname> on Feb 9. These customers may experience email rejection or non-delivery unless the egress IP ranges for securemail.<cloudname> are whitelisted in addition to those already whitelisted for in.securemail.<cloudname>.

This does not impact customers …

Feb 11, 2026

07:30

Scheduled Minor

Upcoming New Data Center and Old CIDR Deprecation - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zpatwo.net

Dear Zscaler Customer,

In accordance with Zscaler Service Continuity Policy and per email notification sent on February 10, 2026, we would like to notify you of the upcoming new data center at the location listed below. This would be available anytime on or after April 11, 2026; 60 days or more from the date the first email notification is sent.

Please update your firewall policy rules and any upstream Access Control Lists to allow the new IP address ranges to avoid any service disruption.

RegionLocationCIDRNotesAmericasMexico City II205.220.94.0/23New data centerAmericasMexico City II205.220.100.0/23New data centerAmericasMexico City II205.220.104.0/23New data centerAmericasMexico City II205.220.106.0/23New data centerAmericasMexico City …

Feb 11, 2026

01:02

Resolved Minor

Munich I Datacenter Scheduled Maintenance - zscloud.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Munich I (MUC1) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscloud.net/cenr

Maintenance Window:

Start time is February 12, 2:00 pm PST (February 12, 22:00 UTC)

End time is February 12, 7:00 pm PST (February 13, 3:00 UTC)

  • Update 2/11/26: Maintenance rescheduled to new time

Update - Fri, 13 Feb 2026 03:04:23 UTC

This activity has been completed. Please contact Zscaler …

Feb 10, 2026

21:15

Resolved Minor

Chicago II Datacenter Scheduled Maintenance - zscalertwo.net

Zscaler will be expanding its global data center footprint and performing planned maintenance at our Chicago II (CHI2) data center. We expect minimal to no impact to services during the maintenance window. 

Please update your firewall policy rules and any upstream Access Control Lists to allow all IP addresses for this DC

For more information, please visit:

https://config.zscaler.com/zscalertwo.net/cenr

Maintenance Window:

Start time is February 12, 5:00 pm PDT (February 13, 1:00 UTC)

End time is February 12, 11:00 am PDT (February 13, 7:00 UTC)

  • Update 2/12: Extending maintenance

Update - Fri, 13 Feb 2026 07:01:56 UTC

This activity has been completed. Please contact Zscaler Support if you …

Feb 10, 2026

19:21

Resolved Minor

Mumbai VI (BOM6) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Zscaler will be performing hardware maintenance in Mumbai VI (BOM6) Datacenter .

Maintenance window:
   Start: 2026-02-16 14:30 UTC
   End:   2026-02-16 17:30 UTC
   (Local Time 2025-12-16 20:00 - 2025-12-16 23:00 IST)

Update - Mon, 16 Feb 2026 15:43:42 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 10, 2026

17:12

Resolved Minor

Chicago 2 (CHI2) Datacenter Network Maintenance - zscalerthree.net

Zscaler will be performing hardware maintenance in the Chicago 2 (CHI2) Datacenter.

Maintenance window,
Start: 2026-02-13 04:00 CST
End: 2026-02-13 06:00 CST
(i.e. 2026-02-13 10:00 - 2026-02-13 12:00 UTC)

Update - Fri, 13 Feb 2026 12:11:10 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 10, 2026

16:08

Resolved Minor

Dallas I (DFW1) Datacenter Network Maintenance - zscalerthree.net

Zscaler will be performing hardware maintenance in Dallas I (DFW1) Datacenter.

Scheduled Maintenance window,
   Start: 2026-02-12 02:00 UTC
   End:   2026-02-12 04:00 UTC
   (Local Time 2026-02-11 20:00 - 2026-02-11 22:00)

Update - Thu, 12 Feb 2026 03:47:38 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 10, 2026

02:11

Resolved Minor

Paris IV Datacenter Scheduled Maintenance - zscaler.net

Zscaler will be performing planned maintenance at our Paris IV (PAR4) Data Center.  

We expect minimal to no impact to services during the maintenance window.

Maintenance Window:

Start time is February 11, 9:00 am PDT (February 11, 17:00 UTC)

End time is February 11, 2:00 pm PDT (February 11, 22:00 UTC)

Update - Wed, 11 Feb 2026 21:35:28 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 10, 2026

00:19

Resolved Minor

London V Datacenter Scheduled Maintenance - zscloud.net

Zscaler will be performing planned maintenance at our London V (LON5) Data Center.  

We expect minimal to no impact to services during the maintenance window.

Maintenance Window:

Start time is February 11, 10:30 am PDT (February 11, 18:30 UTC)

End time is February 11, 2:30 pm PDT (February 11, 22:30 UTC)

Update - Wed, 11 Feb 2026 21:11:04 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 09, 2026

19:21

Resolved Minor

San Francisco IV Datacenter Scheduled Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, zdxcloud.net

Zscaler will be expanding its core platform services and will be performing planned maintenance at our San Francisco IV (SJC4) Data Center. 

We expect minimal to no impact to services during the maintenance window.

Maintenance Window

Start time is February 10, 6:00 pm PST (February 11, 2:00 UTC)

End time is February 10,  11:00 pm PST (February 11, 7:00 UTC)

Update - Wed, 11 Feb 2026 05:57:41 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 09, 2026

17:42

Resolved Minor

Vancouver I (YVR1) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Zscaler will be performing hardware maintenance in Vancouver I (YVR1) Datacenter.

Scheduled Maintenance window,
   Start: 2026-02-19 09:00 UTC
   End:   2026-02-19 13:00 UTC
   (Local Time 2026-02-19 01:00 - 2026-02-19 05:00)

Update - Thu, 19 Feb 2026 12:59:34 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 09, 2026

06:54

Resolved Minor

Toronto III (YTO3) Datacenter Network Maintenance - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com

Zscaler will be performing hardware maintenance in Toronto III (YTO3) Datacenter.

Scheduled Maintenance window,
   Start: 2026-02-17 08:00 UTC
   End:   2026-02-17 11:00 UTC
   (Local Time 2026-02-17 03:00 - 2026-02-17 06:00 EST)

Trust post needs to be extended due to unforeseen onsite situation. New end time is  2026-02-17 14:00 UTC

Update - Tue, 17 Feb 2026 12:47:11 UTC

This activity has been completed. Please contact Zscaler Support if you have additional questions.

Feb 09, 2026

06:30

Resolved Minor

Outbound DLP Email Delivery Failures via Zscaler SMTP IPs - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler is currently investigating an issue where certain outbound email notifications are failing due to Zscaler SMTP IP addresses being flagged by an external third-party reputation service. This is resulting in email delivery disruptions for some customers. We will continue to provide updates here as the investigation progresses. For detailed updates, please check the Service Status section in your Zscaler customer support portal (CSP). Status changes and additional details will be posted there as they become available.

Latest Update - Sun, 15 Feb 2026 18:09:18 UTC

All planned mitigation actions have been completed, including adding the Secure Mail entries for …

Feb 08, 2026

21:15

Monitoring Major

Performance Degradation in Mumbai VI (BOM6) Data Center - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net

Zscaler investigated reports of intermittent performance degradation impacting a subset of customers whose traffic was primarily traversing the Mumbai VI (BOM6) data center. Affected customers may have experienced a significant reduction in internet throughput, resulting in slow application performance and degraded browsing experience. Zscaler has identified the underlying issue and implemented targeted mitigation actions. The environment is being closely monitored to ensure stability during peak and business-hour traffic conditions, after which the mitigation will be extended as appropriate.

Customers who continue to experience traffic impact may consider temporarily steering traffic to a secondary or alternate Zscaler data center. For more information, …

Feb 08, 2026

19:24

Cloud Vendor Status Dashboard - Monitoring 22 services

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