Admins may have seen accepted domains not provisioning in Exchange Online after migration
ID: EX1148496
Issue type: Incident
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Impacted services
Exchange Online
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Details
Title: Admins may have seen accepted domains not provisioning in Exchange Online after migration
User impact: Admins may have seen accepted domains not provisioning in Exchange Online after migration.
More info: Users whose mailboxes were hosted on affected domains may have been unable to send or receive email messages until the issue was resolved and the domains were successfully provisioned.
Final status: The fix for new provisioning requests has been successfully deployed, and service telemetry confirms that the issue has been fully resolved.
Scope of impact: This issue may have potentially impacted any admins performing migrations with accepted domains.
Start time: Wednesday, September 3, 2025, at 12:00 AM UTC
End time: Monday, September 8, 2025, at 8:00 AM UTC
Root cause: A recent update to improve the provisioning and deprovisioning actions in Exchange Online was causing some previously accepted domains to not provision as expected after migration.
Next steps:
- We're reviewing our update procedures to better identify similar issues during our development and testing cycles.
This is the final update for the event.
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