Per the Microsoft Website, "We’ve identified connectivity errors occurring on a portion of Exchange Online infrastructure which receives and processes users’ access requests. We’ve collected networking logs to review to further investigate the source of these errors and confirm our next steps."
This issue currently affects the email service as well as other office 365 services and you can keep up to date below:
status.cloud.microsoft
Status update from Microsoft:
User impact: Users may be unable to connect to multiple Microsoft 365 services.
More info: Potentially impacted services include:
- Exchange Online
- Microsoft Teams
- SharePoint Online
- Microsoft Copilot 365
- Microsoft Defender XDR
Current status: Microsoft is aggressively pursuing all pathways to reduce impact. As a precaution, Microsoft has paused all deployments and configuration changes while Microsoft reviews recent changes for any correlation to this event. Microsoft determined that the elevated load isn’t driven by an overall increase in traffic, but by a large number of servers being unexpectedly unavailable, which is shifting load onto the remaining infrastructure. Microsoft is investigating what’s causing these servers to become unavailable while we work to safely return them to service.
Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services.
Next update by: Thursday, November 12, 2026, at 10:00 PM UTC
