[Comment from Opsgenie]Barb O'Connell acknowledged alert: "M365 Service Health Notification"
Posted May 13, 2020 - 19:56 UTC
Investigating
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Exchange Online service alert
Incident information
Title: All users may be unable to access the Exchange Online service
ID: EX212990
Status
Service Restored
Details
Title: All users may be unable to access the Exchange Online service
User Impact: Users may have been unable to sign in to Outlook on the web.
More info: Users may have encountered an error with the following message: "AADSTS50011: The reply URL specified in the request does not match the reply URLs configured for the application: 'e48d4214-364e-4731-b2b6-47dabf529218'" and/or other general AADSTS errors related to sign-in.
Final status: We've completed the rollback of the impacting change successfully and users should now be able to successfully sign in to Outlook on the web.
Scope of impact: This issue may have potentially affected any user.
Start time: Wednesday, May 13, 2020, at 4:22 PM UTC
End time: Wednesday, May 13, 2020, at 6:45 PM UTC
Root cause: A recent change included a code regression that resulted in users experiencing authentication failures.
Next steps:
- We're reviewing our deployment and provisioning procedures to help prevent similar problems in the future.
We'll publish a post-incident report within five business days.
Thank you,
The Microsoft team
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