Details
Title: All users may be unable to send or receive email through all Exchange Online connection methods
User Impact: Users may have been unable to send or receive email through all Exchange Online connection methods.
More info: Additionally, admins may have experienced issues provisioning new domains or making changes to existing domains or user accounts.
Some of the affected connection methods were the Outlook desktop client, Outlook on the web, and Exchange ActiveSync (EAS). Customers that were affected by this issue had recently provisioned their domain or had made changes to either their existing domain or user accounts in the Exchange Online service.
Final status: We've validated that the fix has been fully implemented and provisioning requests affected by this issue have been processed.
Scope of impact: Your organization was affected by this event, and all users that attempted to send or receive email through Exchange Online may have experienced impact.
Start time: Thursday, July 30, 2020, at 5:59 AM UTC
End time: Sunday, August 2, 2020, at 3:34 AM UTC
Root cause: An issue within Microsoft Online Directory Services (MSODS) was impacting the provisioning of new domains and changes to exiting domains or user accounts, resulting in issues with email and domain management.
Next steps:
- We're reviewing our MSODS code for improved performance and potential automated recovery options to reduce or avoid similar impact in the future.
This is the final update for the event.
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