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teams tm1134507
About this tag
The teams tm1134507 tag on WindowsForum.com covers discussions about a specific Microsoft Teams issue tracked under incident TM1134507. Content under this tag focuses on troubleshooting and fixes for Teams-related problems, particularly those involving Exchange Online integration, Hybrid Modern Authentication (HMA), and mobile client functionality. Users share experiences and solutions for delays, sync quarantines, and authentication errors affecting Teams and Outlook mobile. The tag is relevant for IT administrators and enterprise users managing Microsoft 365 environments who encounter similar Teams or Exchange Online incidents.
Microsoft has acknowledged and begun rolling out a fix for a troubling Exchange Online regression that left some Outlook mobile users unable to send or receive mail — a problem traced to Hybrid Modern Authentication (HMA) and tracked inside the Microsoft 365 Admin Center as incident EX1137017...
admin guidance
change validation
cloud optimization
ex1137017
exchange online
hma
hybrid identity
incident management
incident response
mail delivery delays
microsoft 365
mobile sync
modern authentication
outlook mobile
runbooks
service degradation
service health
sync quarantine
teamstm1134507
telemetry observability