Incident History
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Announcing ZCC Long Term Support versions for 2026 - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net
As a part of Zscaler’s ongoing effort to improve Zscaler Client Connector Supportability, in 2025 we announced the Long Term Support (LTS) major versions for ZCC. You can read more …
Increased errors when creating new Codex tasks
Status: ResolvedAll impacted services have now fully recovered.Affected components Codex (Operational)
Red Hat OpenShift on IBM Cloud worker node fix packs are available
Red Hat OpenShift on IBM Cloud worker node fix packs are available. Worker node fix packs can be applied by updating or reloading the worker node in classic infrastructure, or …
Functional updates and fixes made available on 17 October 2025 are now available in additional regions
Functional updates and fixes made available on 17 October 2025 are now available in additional regions. Regions supporting new functionality and fixes: Dallas (us-south) Frankfurt (eu-de) London (eu-gb) Madrid (eu-es) …
IBM Cloud Kubernetes Service worker node fix packs are available
IBM Cloud Kubernetes Service worker node fix packs are available. Worker node fix packs can be applied by updating or reloading the worker node in classic infrastructure, or replacing the …
Support for primitive JSON arrays in the filter expression
Support for primitive JSON arrays in the filter() expression The filter() expression now supports using arrays of primitive JSON values (such as strings, numbers, and booleans) as the source array. …
Montreal I Datacenter Scheduled Maintenance - zscaler.net, zscloud.net, zscalerthree.net
Zscaler will be performing planned maintenance at our Montreal I (YMQ1) Data Center. We expect minimal to no impact to services during the maintenance window.Maintenance Window:Start time is December 3, 5:00 pm …
Elevated errors going live
Dec 2, 21:07 UTCResolved - This incident has been resolved.Dec 2, 19:00 UTCMonitoring - A fix has been implemented and we are monitoring the results.Dec 2, 18:56 UTCIdentified - Starting …
Core Infrastructure Maintenance LON1
Dec 2, 21:05 UTCCompleted - The scheduled maintenance has been completed.Dec 2, 17:00 UTCIn progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.Nov 30, 16:44 …
Scheduled Maintenance on AMER region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net
The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the AMER region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is …
Scheduled Maintenance on APAC region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net
The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the APAC region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is …
Scheduled Maintenance on EMEA region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net
The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the EMEA region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is …
Paris II (PAR2) Datacenter Network Maintenance - zscaler.net, zscloud.net, zscalerthree.net
Zscaler will be performing hardware maintenance in the Paris II (PAR2) Datacenter.Maintenance window,Start: 2025-12-04 18:00 CESTEnd: 2025-12-04 22:00 CEST(i.e. 2025-12-04 17:00 - 21:00 UTC)During the maintenance, traffic will failover to …
Scheduled Maintenance on Oceania region's Egress NAT nodes - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net
The Zscaler Site Reliability Engineering team will be performing a scheduled maintenance on the Oceania region's Egress NAT nodes on zscalerone.net, zscalertwo.net, zscalerthree.net, zscloud.net and zscaler.net clouds. This maintenance is …
Incident: Trouble with Search
Between 11:51 AM PST and 9:10 PM PST on December 2, 2025, some users experienced issues with the Slack search functionality. Affected users may have encountered a range of symptoms, …
Edge Delivery Issues- between Australia/New Zealand and Non-Oceanic regions
Dec 2, 18:32 UTCResolved - We can confirm that the issue was mitigated at 15:31 UTC on November 25, 2025 and the service has resumed normal operation. Customers and partners …
Connectivity Issue - between Australia/New-Zealand and Non-Oceanic regions
Dec 2, 18:31 UTCResolved - We haven’t observed any additional connectivity issues between our Australia/New Zealand region and non-Oceanic regions, and will now consider this incident resolved. If you continue …
User Authentication Issues - zscalertwo.net
Zscaler has detected an issue with 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 …
Core Infrastructure Maintenance SFO2
Dec 2, 15:00 UTCCompleted - The scheduled maintenance has been completed.Dec 2, 09:00 UTCIn progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.Nov 30, 10:05 …
Administration UI and User Authentication Issues - zscloud.net
Zscaler has detected an issue with the administration UI and user authentication on its zscloud.net Cloud. We will continue to provide updates here as the investigation progresses. For detailed updates, …
Service Edge Availability Issue - zscalertwo.net
Zscaler has detected an issue with its Beijing and Lagos II datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your …
Edge Function invocations are experiencing high error rates in ap-northeast-2 (Seoul) region
Dec 2, 13:01 UTCResolved - This incident has been resolved.Dec 2, 11:57 UTCMonitoring - Issues were encountered with the latest deploy. We've reverted the change and error rates have reduced. …
Elevated Error Rates for Domain Registrations
Dec 2, 11:06 UTCResolved - The issue causing elevated error rates for Domain Registrations has been resolved. Domains are now successfully provisioned and available for immediate use. Some payment attempts …
Capetown IV, Johannesburg III Datacenter Issue - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net
Zscaler has detected an issue with its Capetown IV, Johannesburg III datacenters and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your …
Connectivity Issue with Multiple European Datacenters - zscaler.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com
Zscaler is investigating an issue with multiple European datacenters (Amsterdam II;Amsterdam III;Brussels II;Frankfurt IV;Helsinki I;Johannesburg III;Lisbon I;London III;London V;Madrid III;Madrid IV;Manchester I;Manchester II;Marseille I;Milan III;Paris II;PARIS IV (PAR4);Vienna I;Warsaw II;Zurich) …
Delayed Billing Process
Dec 2, 08:45 UTCResolved - This incident has been resolved.Dec 1, 14:56 UTCIdentified - We have identified an issue where a number of users may not have been billed correctly …
Edge Function invocations are experiencing high error rates in ap-northeast-2 (Seoul) region
Dec 2, 07:58 UTCResolved - This incident has been resolved.Dec 2, 06:56 UTCMonitoring - We’ve reverted the latest deployment and continuing to monitor
Zscaler Services Inaccessible After Upgrading to Zscaler Client Connector versions 4.4 or 4.4.1 for iOS - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, private.zscaler.com, zdxcloud.net, zpatwo.net
What is the issue?:Zscaler Client Connector versions 4.4 and 4.4.1 for iOS has a known issue that may cause users to lose access to Zscaler services, e.g., Zscaler Internet Access …
Reminder Notification for Upcoming Data Center Expansion - 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 October 15, 2025, we would like to remind you of the upcoming data center expansions …
Reminder Notification for Additions to HUB IP Address Ranges - zscaler.net, zscalerone.net, zscalertwo.net, zscloud.net, zscalerthree.net, zdxcloud.net
Dear Customer, In accordance with Zscaler Service Continuity Policy and as previously announced via Trust and email notification sent on October 15, 2025, we would like to remind you of the upcoming addition to HUB IP …
Cluster autoscaler addon patch updates for Red Hat OpenShift on IBM Cloud
Cluster autoscaler add-on patch updates for Red Hat OpenShift on IBM Cloud. For more information, see Cluster autoscaler add-on change log. IBM Cloud Object Storage add-on patch updates. For more …
Satellite Connector agent image version code124code
Satellite Connector agent image version 1.2.4. For more information, see the change log and Running a Connector agent. Type: release_note Regions: global Resources: satellite Type: release_note Update Time: Wed Dec …
Cluster autoscaler addon patch updates for IBM Cloud Kubernetes Service
Cluster autoscaler add-on patch updates for IBM Cloud Kubernetes Service. For more information, see Cluster autoscaler add-on change log. IBM Cloud Object Storage add-on patch updates. For more information, see …
Collection of configurations of IBM Cloud Security and Compliance Center Workload Protection
Collection of configurations of IBM Cloud Security and Compliance Center Workload Protection Configuration aggregator can now collect configurations of IBM Cloud Security and Compliance Center Workload Protection. Type: release_note Regions: …
Montreal I Datacenter Scheduled Maintenance - zscalertwo.net
Zscaler will be expanding its global data center footprint and performing planned maintenance at our Montreal I (YMQ1) Data Center. The new VIPs for Zscaler Extranet Application Support is 165.225.212.63. We expect …
Administration UI and User Authentication Issues - zscaler.net
We are investigating an issue with the administration UI and user authentication on our zscaler.net cloud. For more information, please check the information available in your Zscaler customer support portal …
Degraded Supavisor performance in US-West-1 (Northern California)
Dec 1, 17:33 UTCResolved - This incident has been resolved.Dec 1, 16:35 UTCMonitoring - The fix was deployed and the latency stabilized. We are now monitoring to make sure that …
Chicago II Datacenter Issue - zscloud.net
Zscaler has detected an issue with our Chicago II datacenter and is currently investigating the matter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC …
[Scheduled] DDoS Protection | All Locations Maintenance
Type: Maintenance Duration: 1 hour Affected Components: Protection Dec 1, 10:00:00 GMT+0 - Identified - During this time period, our engineering team will be performing team will be performing scheduled …
[Scheduled] Hosting | Luxembourg Maintenance
Type: Maintenance Duration: 9 hours Affected Components: Luxembourg (ED) Dec 1, 08:00:01 GMT+0 - Identified - Maintenance is now in progress Dec 1, 14:00:00 GMT+0 - Completed - Maintenance has …
Notification of EOL of TLS 1.0 and TLS 1.1 in MongoDB Atlas
Dec 1, 01:00 UTCCompleted - The scheduled maintenance has been completed.Dec 1, 00:00 UTCIn progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.Nov 19, 16:39 …
Docker
Docker Docker is updated to version 28, providing improved performance, and compatibility with the latest container tools. yq yq is upgraded from version 3 to version 4, bringing enhanced YAML …
Azure — Serverless projects
Nov 29, 11:25 UTCResolved - The fix is working as expected. This issue is resolvedNov 29, 10:08 UTCMonitoring - We have completed the roll out of the fix and are …
Scheduled CDN Logging Maintenance Notice
Nov 29, 06:00 UTCCompleted - The scheduled maintenance has been completed.Nov 28, 23:15 UTCIn progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.Nov 18, 15:12 …
IBM Cloud Continuous Delivery upgrade of Tekton framework
The IBM Cloud Continuous Delivery service is updating the public IBM-managed pipeline workers to the next Tekton LTS release, 1.6.0. This change may affect users running older versions of the …
API increased error rates
Nov 28, 17:24 UTCResolved - This incident has now been resolved.Nov 28, 17:05 UTCMonitoring - We have implemented a fix, affected API services are now restored. We will monitor the …
Incident: Slack login, workspaces loading failures, and general Slack functionality issues
Starting around 1:45 AM PST until 4:30 AM PST on November 28, 2025, some users encountered connectivity issues, including difficulty accessing and loading their workspaces and receiving "Server error" messages.We …
[Scheduled] Cloud | Sines-3 Maintenance
Type: Maintenance Duration: 3 hours Affected Components: File Shares as a Service Nov 28, 10:00:01 GMT+0 - Identified - Maintenance is now in progress Nov 28, 13:00:00 GMT+0 - Completed …
Tokyo IV Datacenter Issue - zscaler.net
Zscaler has detected an issue with its Tokyo IV datacenter and is currently investigating the matter. Customers forwarding traffic via GRE may experience connection related issues. If you’re currently experiencing …
Docs.redhat.com - Partial Outage
Nov 28, 07:12 UTCResolved - This incident has been resolved.Nov 27, 10:00 UTCIdentified - docs.redhat.com team is experiencing an ongoing issue impacting some users of docs.redhat.com. Impacted users are receiving …