Outage in Microsoft Teams
Users may intermittently be unable to join meetings or access Microsoft Teams Free for Windows
Major
March 18, 2026 - Started about 12 hours ago
Incident Report
We're developing a fix to address the regression that’s occurring as a result of a recent Windows update, which we expected to will be completed by March 24, 2026. In parallel, we're evaluating the viability of a configuration change to address this impact expediently.
Components affected
Microsoft Teams FreeLatest Updates ( sorted recent to last )
about 11 hours ago - at 03/18/2026 08:29PM
Title: Users may intermittently be unable to join meetings or access Microsoft Teams Free for Windows
User impact: Users may intermittently be unable to join meetings or access Teams Free for Windows.
More info: Users may see the following banner: "We couldn't authenticate you, This could be due to a device or network problem, or Teams could be experiencing a Technical issue."
This impacts Windows' versions 25H2: 26200.8037, 24H2: 26100.8037, 23H2: 22631.6783, 22H2: 19045.7058, and users can restart their computer to circumvent impact.
Current status: We're developing a fix to address the regression that’s occurring as a result of a recent Windows update, which we expected to will be completed by March 24, 2026. In parallel, we're evaluating the viability of a configuration change to address this impact expediently.
Next update by: Thursday, March 19, 2026, at 6:30 PM UTC
about 12 hours ago - at 03/18/2026 07:06PM
Title: Users may intermittently be unable to join meetings or access Microsoft Teams Free for Windows
User impact: Users may intermittently be unable to join meetings or access Teams Free for Windows.
More info: Users may see the following banner: "We couldn't authenticate you, This could be due to a device or network problem, or Teams could be experiencing a Technical issue."
This impacts Windows' versions 25H2: 26200.8037, 24H2: 26100.8037, 23H2: 22631.6783, 22H2: 19045.7058, and users can restart their computer to circumvent impact.
Current status: We determined that a recent Windows update contains a regression that’s resulting in impact. We're investigating routes to address this impact expediently but recommend that users restart their computer to circumvent this impact in the meantime.
Next update by: Wednesday, March 18, 2026, at 8:30 PM UTC
about 13 hours ago - at 03/18/2026 06:39PM
Title: Users may intermittently be unable to join meetings or access Microsoft Teams Free for Windows
User impact: Users may intermittently be unable to join meetings or access Teams Free for Windows.
More info: Users may see the following banner: "We couldn't authenticate you, This could be due to a device or network problem, or Teams could be experiencing a Technical issue."
This impacts Windows' versions 25H2: 26200.8037, 24H2: 26100.8037, 23H2: 22631.6783, 22H2: 19045.7058, and users can restart their computer to circumvent impact.
Current status: We're investigating a potential issue with Teams Free and checking into impact to users. We'll provide an update within 30 minutes.
Latest Microsoft Teams outages
Some users may experience issues signing into Microsoft Teams Free on mobile iOS and Android devices - 27 days ago
Users may not see other users’ presence status in Microsoft Teams Free - about 1 month ago
All users may be unable to access Microsoft Teams Free using a browser - about 1 month ago
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