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Microsoft Teams desktop client launch failure from service update regression

Service Disruption
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Last updated
Happening score
H score 1
1 unique sources, 1 articles

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Microsoft reverted a service update after it left some Microsoft Teams desktop client users unable to launch the app, disrupting access and leaving affected clients on the loading screen. Microsoft attributed the breakage to a regression in the Teams client build caching system and said an automated recovery system had remediated impact. Impacted users are being told to fully quit and restart Teams so the fix propagates.

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Microsoft Teams and Office for the web file-opening outage

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H score25 First: 01.06.2026 17:36 Last: 01.06.2026 17:36 Sources 1

About this happening: Microsoft is investigating an ongoing **service disruption** that is blocking **Teams** and **Office for the web** users from opening files, disrupting access to shared documents...

Open Happening

Microsoft Teams on macOS repeated location-prompt service disruption

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H score0 First: 19.05.2026 19:10 Last: 19.05.2026 19:10 Sources 1

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H score42 First: 14.05.2026 15:12 Last: 14.05.2026 15:12 Sources 1

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Timeline

  1. 20.04.2026 12:40 2 articles · 2mo ago

    Microsoft reverts Teams service update after launch failures

    Mitigation Patch Update

    Microsoft reverted a service update after some customers using older Microsoft Teams desktop client builds were unable to launch Teams and were stuck on the loading screen. Microsoft attributed the failure to a regression in the Microsoft Teams client build caching system, said automated recovery had already remediated impact for some users, and instructed impacted users to fully quit and restart Teams so the fix would propagate.

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