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Microsoft is working to resolve an ongoing outage affecting Microsoft Teams users, causing delays and preventing some from accessing the service.

Major Microsoft Teams Performance Update Rolling Out in January 2026 Your email has been sent Microsoft is splitting the Teams calling stack into a new background process on Windows to cut launch ...

Microsoft says it will add a new Teams call handler beginning in January 2026 to reduce launch times and boost call performance for the Windows desktop client. A new process, ms-teams_modulehost.exe, ...