Users may see Microsoft Teams on the web displayed in English

Title: Users may see Microsoft Teams on the web displayed in English User impact: Users may have seen Microsoft Teams on the web displayed in English. More info: Impact may have affected any user that didn't have English set as their preferred language. Final status: We've completed the deployment of our fix and confirmed through monitoring service health telemetry that the impact has been remediated. Scope of impact: Any user may have seen Microsoft Teams on the web displayed in English when it wasn’t their preferred language. Start time: Monday, September 28, 2026, at 7:30 PM UTC End time: Wednesday, November 4, 2026, at 3:29 PM UTC Root cause: A redirection issue was incorrectly applying English language settings when users accessed Microsoft Teams on the web. Next steps: - We're reviewing the problematic redirection issue to determine how it was introduced into the service, so that we can prevent similar instances of impact from occurring in the future. This is the final update for the event.

Title: Users may see Microsoft Teams on the web displayed in English User impact: Users may see Microsoft Teams on the web displayed in English. More info: Impact may affect any user that doesn't have English set as their preferred language. Current status: After verifying that expediting our solution wouldn't be viable in this situation, we're monitoring our fix deployment. We'll provide an estimated timeline for the completion of the deployment and the remediation of the impact once it has become available. Scope of impact: Any user may see Microsoft Teams on the web displayed in English when it isn’t their preferred language. This information may be updated as our investigation continues. Start time: Monday, September 28, 2026, at 7:30 PM UTC Root cause: A redirection issue is incorrectly applying English language settings when users access Microsoft Teams on the web. Next update by: Wednesday, November 4, 2026, at 11:00 PM UTC

Title: Users may see Microsoft Teams on the web displayed in English User impact: Users may see Microsoft Teams on the web displayed in English. More info: Impact may affect any user that doesn't have English set as their preferred language. Current status: We've begun deployment and are monitoring its progress while we consider possible options to expedite its completion. We'll provide an updated deployment timeline if one becomes available. Scope of impact: Any user may see Microsoft Teams on the web displayed in English when it isn’t their preferred language. This information may be updated as our investigation continues. Estimated time to resolve: Thursday, November 5, 2026 Root cause: A redirection issue is incorrectly applying English language settings when users access Microsoft Teams on the web. Next update by: Wednesday, October 28, 2026, at 11:00 PM UTC

Title: Users may see Microsoft Teams on the web displayed in English User impact: Users may see Microsoft Teams on the web displayed in English. More info: Impact may affect any user that doesn't have English set as their preferred language. Current status: We're completing final validations of the efficacy of our fix, after which we'll begin deployment and continually monitor the progress. We currently estimate that it will complete deployment on Thursday, November 5, 2026. Scope of impact: Any user may see Microsoft Teams on the web displayed in English when it isn’t their preferred language. This information may be updated as our investigation continues. Estimated time to resolve: Thursday, November 5, 2026 Root cause: A redirection issue is incorrectly applying English language settings when users access Microsoft Teams on the web. Next update by: Friday, October 23, 2026, at 10:00 PM UTC

Title: Users may see Microsoft Teams on the web displayed in English User impact: Users may see Microsoft Teams on the web displayed in English. More info: Impact may affect any user that doesn't have English set as their preferred language. Current status: We're continuing to prepare our fix for full deployment and our current projections indicate that the issue may be remediated by early to mid-November, 2026. Scope of impact: Any user may see Microsoft Teams on the web displayed in English when it isn’t their preferred language. This information may be updated as our investigation continues. Next update by: Monday, October 19, 2026, at 10:00 PM UTC

Title: Users see Microsoft Teams on the web displayed in English User impact: Users see Microsoft Teams on the web displayed in English. More info: Affected users don’t have English set as their preferred language. Current status: We’ve developed and are in the initial stages of deploying a fix to correct the recent configuration change which is causing the issue and expect that a remediation timeline will be provided by the time of our next scheduled update. Scope of impact: Your organization is affected by this event, and some users see Microsoft Teams on the web displayed in English when it isn’t their preferred language. This information may be updated as our investigation continues. Next update by: Monday, October 19, 2026, at 10:00 PM UTC

Title: Users see Microsoft Teams on the web displayed in English User impact: Users see Microsoft Teams on the web displayed in English. More info: Affected users don’t have English set as their preferred language. Current status: We’ve determined that a redirection issue is incorrectly applying English language settings when users access Microsoft Teams on the web. We’re reviewing options to correct this behavior and working with affected users to collect additional logs to better understand the impact scenario and fully resolve the issue. Scope of impact: Your organization is affected by this event, and some users see Microsoft Teams on the web displayed in English when it isn’t their preferred language. This information may be updated as our investigation continues. Next update by: Wednesday, October 7, 2026, at 4:00 AM UTC

Title: Users see Microsoft Teams on the web displayed in English User impact: Users see Microsoft Teams on the web displayed in English. More info: Affected users don’t have English set as their preferred language. Current status: We’re reviewing system logs to isolate the origin of this issue. Scope of impact: Your organization is affected by this event, and some users see Microsoft Teams on the web displayed in English when it isn’t their preferred language. This information may be updated as our investigation continues. Next update by: Tuesday, October 6, 2026, at 6:30 AM UTC