Microsoft restores Teams after US disruption tracked as TM1526111
Original title: Microsoft Investigation Teams Issue Affecting Users in the United States
Automatic scaling returned throughput to healthy levels on October 26, but Microsoft has not named the trigger, user count or affected features.
Microsoft said it restored Microsoft Teams after an issue affecting some users in the United States on October 26, 2026, tracked as incident TM1526111. Telemetry showed automatic scaling increased processing throughput and service health returned to normal. The company has not said how many users were affected or which Teams features failed. Public statements do not establish a cyberattack, data breach or account compromise, and they leave the original trigger unexplained. Administrators can look up TM1526111 under Service health in the Microsoft 365 admin center.
Unconfirmed: Microsoft has not explained the cause or confirmed which Teams features users lost.
- Impact was described as some US users, not a global outage.
- Microsoft first posted via its Microsoft 365 Status account.
- Earlier September calling and August multi-feature disruptions are background only.
- The notice does not say whether calls, messages, meetings or sign-in failed.
- 1.Check incident TM1526111 under Service health in the Microsoft 365 admin center.
- Vendors
- Microsoft
- Products
- Microsoft TeamsMicrosoft 365
- Countries
- United States
From the original article
2 min read at cybersecuritynews.com
Microsoft has restored Microsoft Teams service after investigating an issue affecting some users in the United States on October 26, 2026. The company tracked the disruption under incident TM1526111 and said automatic scaling efforts had returned the service to healthy levels. The recovery update changes the picture from Microsoft’s initial notice, which described a potential […]
By Guru Baran · cybersecuritynews.com
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