Some users attempting to view their Microsoft Teams contact lists may experience latency

Title: Some users attempting to view their Microsoft Teams contact lists may experience latency User impact: Users attempting to view their Microsoft Teams contact lists may have experienced latency. More info: Users attempting to view their Microsoft Teams contact lists may have experienced latency. Final status: Our fix has completed its deployment to all affected regions, resolving this impact. Scope of impact: Some users who were attempting to view their Microsoft Teams contact lists may have been affected. Start time: Wednesday, July 29, 2026, at 12:00 AM UTC End time: Saturday, September 5, 2026, at 12:00 AM UTC Root cause: A recent service update to improve the user interface of Microsoft Teams contact lists contained a code regression and was resulting in impact. Next steps: - We're reviewing the responsible service update to better understand what led to the error that resulted in impact and prevent similar future occurrences. This is the final update for the event.

Title: Some users attempting to view their Microsoft Teams contact lists may experience latency User impact: Users attempting to view their Microsoft Teams contact lists may experience latency. More info: Users attempting to view their Microsoft Teams contact lists may experience latency and their contact list may not appear for up to 15 minutes. Current status: The deployment of the code fix has begun, and we anticipate it being fully deployed to all affected environments by the time of our next communication. Scope of impact: Some users who are attempting to view their Microsoft Teams contact lists may be affected. This information may be updated as our investigation continues. Start time: Wednesday, July 29, 2026, at 12:00 AM UTC Root cause: A recent service update to improve the user interface of Microsoft Teams contact lists contained a code regression and is resulting in impact. Next update by: Monday, September 7, 2026, at 9:00 PM UTC

Title: Some users attempting to view their Microsoft Teams contact lists may experience latency User impact: Users attempting to view their Microsoft Teams contact lists may experience latency. More info: Users attempting to view their Microsoft Teams contact lists may experience latency and their contact list may appear for up to 15 minutes. Current status: We’ve determined that a recent service update to improve the user interface of Microsoft Teams contact lists contained a code regression and is resulting in impact. We’ve developed a fix to correct the offending code regression, and we anticipate that the deployment process will begin prior to our next scheduled update, at which point we expect that a remediation timeline will be provided. Scope of impact: Some users who are attempting to view their Microsoft Teams contact lists may be affected. This information may be updated as our investigation continues. Start time: Wednesday, July 29, 2026, at 12:00 AM UTC Root cause: A recent service update to improve the user interface of Microsoft Teams contact lists contained a code regression and is resulting in impact. Next update by: Wednesday, September 2, 2026, at 9:00 PM UTC

Title: Some users attempting to view their Microsoft Teams contact lists may experience latency User impact: Users attempting to view their Microsoft Teams contact lists may experience latency. More info: Users attempting to view their Microsoft Teams contact lists may experience latency and their contact list may appear for up to 15 minutes. Current status: We're investigating a potential issue with Microsoft Teams and checking for impact to your organization. We'll provide an update within 30 minutes.