Resolved after 5 hours 45 minutes, affecting Core services (United States) and Core services (Canada) and 1 more, on August 18, 2026.
The mitigation has completed its rollout to all regions. Customers are encourged to close all tabs and clear their browser cache if they continue to experience issues. Our engineers will be investigating this further to learn from and reduce the risk of potential recurrences. We apologize for the impact this had on our customers.
Affected components
Update timeline
- identified Aug 18, 2026, 07:53 PM UTC
Our engineers are currently investigating an event impacting Azure DevOps involving sign in/out loops. The event is being triaged and we will post an update as soon as we know more.
- identified Aug 18, 2026, 08:48 PM UTC
Investigation showed customers are hitting distinct issues, mostly around tenant conditional access policies (CAP) triggering a known issue in Azure DevOps that may result in looping logins. Customers are encourged to close all tabs and clear their browser cache if they experience issues. Our engineers are disabling a feature flag to provide a broad mitigation to these issues.
- identified Aug 18, 2026, 11:05 PM UTC
The mitigation has been successful rolled out to all regions and our engineers are monitoring telemetry. Customers are encourged to close all tabs and clear their browser cache if they continue to experience issues.
- resolved Aug 19, 2026, 01:05 AM UTC
The mitigation has completed its rollout to all regions. Customers are encourged to close all tabs and clear their browser cache if they continue to experience issues. Our engineers will be investigating this further to learn from and reduce the risk of potential recurrences. We apologize for the impact this had on our customers.
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