Outage in Microsoft Teams

Users may be unable to access or sign in to Microsoft Teams Free on iOS devices

Resolved Major

June 26, 2026 - Started 24 days ago - Lasted about 4 hours

Incident Report

Summary AI Generated

Microsoft Teams Free experienced a ~4-hour outage preventing users from accessing or signing in on iOS and Android mobile devices. The issue was caused by a recent code change that referenced a deprecated authentication component for mobile devices. Microsoft resolved the incident by reverting the offending change.

We've determined that this issue is due to a recent change that included a reference to a deprecated authentication component for mobile devices. We're reverting this offending change to mitigate impact.

Components affected

Microsoft Teams Free

Latest Updates ( sorted recent to last )

24 days ago - at 06/26/2026 09:49PM

Title: Users may be unable to access or sign in to Microsoft Teams Free on iOS or Android mobile devices
User impact: Users may be unable to access or sign in to Microsoft Teams Free on iOS or Android mobile devices.
Current status: We've determined that this issue is due to a recent change that included a reference to a deprecated authentication component for mobile devices. We're reverting this offending change to mitigate impact.
Start time: Thursday, June 25, 2026, at 7:00 PM UTC
Next update by: Saturday, June 27, 2026, at 1:30 AM UTC

24 days ago - at 06/26/2026 09:21PM

Title: Users may be unable to access or sign in to Microsoft Teams Free on iOS devices
User impact: Users may be unable to access or sign in to Microsoft Teams Free on iOS devices.
Current status: We're investigating a potential Microsoft Teams Free issue in which users may be unable to access or sign in to the service on iOS devices and will provide an update in 30 minutes.

Latest Microsoft Teams outages

Some users are unable to search, chat or call users in Microsoft Teams Free - 3 months ago

Users may intermittently be unable to join meetings or access Microsoft Teams Free for Windows - 4 months ago

Some users may experience issues signing into Microsoft Teams Free on mobile iOS and Android devices - 5 months ago

Users may not see other users’ presence status in Microsoft Teams Free - 5 months ago

All users may be unable to access Microsoft Teams Free using a browser - 5 months ago

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