Outage in Microsoft 365
Some users may be unable to send and receive emails the Outlook desktop client or Outlook on the web
Minor
January 26, 2026 - Started about 4 hours ago
Incident Report
Title: Some users may be unable to send and receive emails the Outlook desktop client or Outlook on the web
User impact: Users may be unable to send and receive emails the Outlook desktop client or Outlook on the web.
More info: Some users may also be unable to load emails in the desktop client or Outlook on the web.
Current status: We're reviewing service monitoring telemetry to isolate the source of the issue and establish a fix.
Scope of impact: Impact is specific to some users located in Germany, attempting to load, send and receive emails in the Outlook desktop client or Outlook on the web.
Next update by: Monday, January 26, 2026, at 12:30 PM UTC
Components affected
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Latest Updates ( sorted recent to last )
about 1 hour ago - at 01/26/2026 12:26PM
Title: Some users may be unable to send and receive emails the Outlook desktop client or Outlook on the web
User impact: Users may be unable to send and receive emails the Outlook desktop client or Outlook on the web.
More info: Some users may also be unable to load emails in the desktop client or Outlook on the web.
Current status: We’ve identified that an increase in requests routed through the affected infrastructure is causing the observed impact. Monitoring shows the service is returning to normal health as request volumes decrease. We're continuing to closely monitor telemetry to confirm stability and ensure the issue does not reoccur.
Scope of impact: Impact is specific to some users located in Germany, attempting to load, send and receive emails in the Outlook desktop client or Outlook on the web.
Root cause: An increase in requests routed through the affected infrastructure is causing the observed impact.
Next update by: Monday, January 26, 2026, at 2:30 PM UTC
about 3 hours ago - at 01/26/2026 10:22AM
Title: Some users may be unable to send and receive emails the Outlook desktop client or Outlook on the web
User impact: Users may be unable to send and receive emails the Outlook desktop client or Outlook on the web.
More info: Some users may also be unable to load emails in the desktop client or Outlook on the web.
Current status: We're reviewing service monitoring telemetry to isolate the source of the issue and establish a fix.
Scope of impact: Impact is specific to some users located in Germany, attempting to load, send and receive emails in the Outlook desktop client or Outlook on the web.
Next update by: Monday, January 26, 2026, at 12:30 PM UTC
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