Posted on: Fri, 07 Nov 2025 11:36:32 UTC
Resolved on: Fri, 07 Nov 2025 13:24:37 UTC
Impact Start Time: Fri, 07 Nov 2025 09:35:23 UTC
Impact Remediated: Fri, 07 Nov 2025 11:36:23 UTC
Dublin II, Frankfurt V Datacenter Issue
Customer Impact: Customers may have experienced intermittent connection timeouts.
Datacenters affected: EMEA, Dublin II, Frankfurt V
Status: Resolved
Event Type: Service Disruption

Zscaler detected an issue with our Dublin II, Frankfurt V datacenter. Customers may have experienced intermittent connection timeouts. Zscaler has implemented preliminary mitigation measures to address the issue. The team is actively monitoring and evaluating the effectiveness of these measures.

Incident Status: Resolved 
Root Cause: Zscaler identified an issue with traffic routing systems in the FRA5 and DUB2 datacenters, which temporarily affected connectivity and performance. Preliminary mitigation measures have been implemented to address the problem.

Update - Fri, 07 Nov 2025 13:24:37 UTC

Following the actions previously taken by Zscaler, the incident has been resolved. Our systems remain fully operational, and we will continue to monitor the situation closely to ensure ongoing stability.