Title: Some Microsoft 365 or hybrid Exchange Online users may be unable to sign in to service from any connection method
ID: EX268014
Status Service Degradation
Details Title: Some Microsoft 365 or hybrid Exchange Online users may be unable to sign in to service from any connection method
User Impact: Users may be unable to sign in to Exchange Online from any connection method.
More info: This issue is specific to Microsoft 365 and Hybrid Exchange users hosted on infrastructure in North and West Europe, as well as East United States.
Current status: We've received reports that a subset of Microsoft 365 and hybrid Exchange Online users hosted on infrastructure in North and West Europe, as well as East United States are unable to sign in to the service through any connection method. Our investigation indicates that the affected users' mailboxes are unable to be detected correctly by the AutoDetect service. We're reviewing provided logs and recent updates to determine our mitigation plan.
Scope of impact: This issue is impacting a subset of Microsoft 365 and hybrid Exchange Online users hosted on infrastructure in North and West Europe, as well as East United States, whose mailboxes are unable to be detected correctly by the AutoDetect service.
Next update by: Wednesday, July 14, 2021, at 5:00 AM UTC