Users may be blocked from opening URLs in Exchange Online messages and Microsoft Teams.

Microsoft issued an incident report on 6 Sep 2025 (Sat)

Users Affected Users  receiving email messages or messages within Microsoft Teams containing specific URLs may be affected.
Start Time 5 Sep 2025 (Fri) 9:10 PM
End Time To be updated
User Impact Users may be blocked from opening URLs in Exchange Online messages and Microsoft Teams.
Incident Details Current Status:
Microsoft (MS) has continued to make progress in reducing the frequency of false positive flagging while identifying new opportunities to improve recovery accuracy. Recovery efforts remain ongoing and require careful attention to ensure that legitimate content is restored appropriately, while malicious items remain securely quarantined. Microsoft’s  analysis of flagged content is actively informing updates to detection logic, helping the drive safer and more complete recovery outcomes. 

Next update by: 8 Sep 2025 (Mon)
Status Microsoft is fixing the problem

Last update by Microsoft: 8 Sep 2025 (Mon) 8:53 AM