Outage in Microsoft 365 Consumer
Users may be unable to access or sign in to Microsoft Teams Free on iOS devices
Resolved Major
June 26, 2026 - Started 21 days ago
- Lasted about 4 hours
Incident Report
Summary AI Generated
A recent code change referencing a deprecated authentication component caused Microsoft Teams Free users on iOS and Android mobile devices to be unable to access or sign in to the service. The outage lasted approximately 3.8 hours before Microsoft identified the root cause and began reverting the offending change to restore access.
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 365 Consumer Microsoft Teams FreeTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
21 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
21 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.
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