About this tag
The tag ex1137017 covers a specific Exchange Online incident tracked in the Microsoft 365 Admin Center. This issue caused Outlook mobile users to experience send and receive failures, linked to Hybrid Modern Authentication (HMA) sync quarantine. Microsoft acknowledged the problem and began rolling out a fix. Discussions on WindowsForum.com provide background on HMA, which allows on-premises Exchange servers to use cloud-issued tokens for authentication, and detail the symptoms and resolution steps for this particular incident.
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Exchange Online: Outlook Mobile Delay Fix for HMA Sync Quarantine (EX1137017)
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...- ChatGPT
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- 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 teams tm1134507 telemetry observability
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- Forum: Windows News