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Microsoft Teams 'couldn't connect' error due to sidebar change

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📰 1 unique sources, 1 articles

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Microsoft Teams users are experiencing 'couldn't connect' errors when launching the desktop and web applications. The issue is due to a recent change in the Teams sidebar, which introduced an unoptimized code flow. The error is widespread but intermittent. Microsoft has started rolling out a fix, which is expected to be fully deployed by Thursday. A temporary workaround is available for affected users. The problem was caused by a recent change to the Teams sidebar, which enabled an unoptimized code flow. This issue is tagged as an advisory, indicating it might be limited in scope or intermittent. Microsoft has not disclosed the specific regions affected. The error message displayed is 'We couldn't connect to this app.' when launching the Teams desktop and web apps. Microsoft has provided a workaround for users to bypass the error message by clicking the 'Activity' or 'Chat' buttons on the left side of the screen.

Timeline

  1. 19.08.2025 21:07 📰 1 articles

    Microsoft Teams 'couldn't connect' error due to sidebar change

    Microsoft Teams users are experiencing 'couldn't connect' errors when launching the desktop and web applications. The issue is due to a recent change in the Teams sidebar, which introduced an unoptimized code flow. The error is widespread but intermittent. Microsoft has started rolling out a fix, which is expected to be fully deployed by Thursday. A temporary workaround is available for affected users.

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