Microsoft 365 Outage Knocks Down Teams, Thousands Report Services Not Working Despite Microsoft's Fix Claim

It seems Microsoft 365‘s service disruption isn’t over for everyone. After Outlook and Exchange Online users reported widespread access problems, Microsoft Teams has also faced a sharp spike in outage reports. Downdetector recorded 4,561 reports moments back, against a baseline of just 10. The latest reports follow Microsoft’s confirmation on X regarding a separate Teams incident. The company initially reported problems affecting users in North America under tracking ID TM1550488.

Teams outage reports surge as Microsoft confirms recovery

Microsoft initially said the Teams issue affected users in North America. It later confirmed related impact scenarios and updated incident TM1550488. The company said its automated recovery features had taken action and were effectively reducing the impact. In the subsequent updaate on X, Microsoft said its mitigation efforts had successfully restored service health and functionality, with customer impact fully resolved.

The timing is interesting because Outlook and Exchange Online are also experiencing issues. As covered in our Exchange Online outage report, Microsoft acknowledged mailbox access failures under incident EX1550543. A separate Microsoft 365 advisory also identified elevated infrastructure load across multiple regions. Its potentially affected services included Exchange Online, Teams, SharePoint Online, Microsoft Defender XDR, and Microsoft 365 Copilot. This suggests the incidents may share a broader infrastructure problem, although Microsoft has not explicitly confirmed that TM1550488 and EX1550543 have the same underlying cause.

This is a developing story…