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Windows Reset
Square Microsoft Teams news cover warning of desktop client issues under service advisory TM1466820, causing the app to fail to open or take up to two minutes to load, with web and mobile recommended as alternatives.
Microsoft Teams

Microsoft investigates Teams desktop client launch failures on Windows

Microsoft has opened a service health advisory, TM1466820, after some Windows users found the Teams desktop client would not open or took up to two minutes to load. The company recommends Teams on the web or mobile while it hunts for a root cause.

Sep 5, 2026, 5:28 PM 8 min
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EEmanuel De Almeida