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Microsoft Teams launch connectivity error and fix rollout

Service Disruption
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1 unique sources, 1 articles

Summary

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Microsoft Teams is facing a launch-time connectivity error that prevents some users from opening the desktop and web apps, disrupting access while a fix rolls out. The problem stems from a recent sidebar change that introduced an unoptimized code flow. Microsoft says the repair has reached 25% of affected customers and is expected to remediate all impacted organizations by Thursday. Until then, users can bypass the error with the Activity or Chat buttons.

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Timeline

  1. 19.08.2025 21:07 1 articles · 9mo ago

    Microsoft Teams launch connectivity error and workaround

    Initial Disclosure

    Microsoft says affected Microsoft Teams desktop and web app users see "We couldn't connect to this app." on launch, and that a recent change intended to improve the left sidebar enabled an unoptimized code flow that generates the error. Microsoft has started rolling out a fix that has reached 25% of affected customers, expects full remediation by Thursday, and recommends using the "Activity" or "Chat" buttons as a temporary workaround.

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