Users may intermittently be unable to join meetings or access Microsoft Teams Free for Windows

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 continuing to develop our fix aimed at addressing the regression introduced by the offending Windows update after we confirmed that a configuration change isn't a viable option in addressing impact.
Start time: Tuesday, March 10, 2026, at 12:00 AM UTC
Root cause: A recent Windows update introduced a regression within the Microsoft Teams Free for Windows service, and is resulting in impact.
Next update by: Friday, March 20, 2026, at 6:30 PM UTC

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

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

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.