Outage in Microsoft 365
Some users may be unable to send and receive emails in the Outlook desktop client or Outlook on the web
Resolved Minor
January 26, 2026 - Started 3 months ago
- Lasted about 6 hours
Incident Report
Title: Some users may be unable to send and receive emails in the Outlook desktop client or Outlook on the web
User impact: Users may be unable to send and receive emails in 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
Exchange OnlineTrusted by 1,000+ teams
The Status Page Aggregator with Early Outage Detection
Stop finding out about outages from your users. Monitor 6,320+ cloud services and get alerted the second something breaks.
Start Free Trial
- No credit card
- 14-day trial
- 2-minute setup
Latest Updates ( sorted recent to last )
3 months ago - at 01/26/2026 02:17PM
Title: Some users may be unable to send and receive emails in the Outlook desktop client or Outlook on the web
User impact: Users may be unable to send and receive emails in the Outlook desktop client or Outlook on the web.
Current status: We're proceeding to closely monitor telemetry whilst it returns to normal health as request volumes decrease, 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 4:30 PM UTC
3 months ago - at 01/26/2026 12:26PM
Title: Some users may be unable to send and receive emails in the Outlook desktop client or Outlook on the web
User impact: Users may be unable to send and receive emails in 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
3 months ago - at 01/26/2026 10:22AM
Title: Some users may be unable to send and receive emails in the Outlook desktop client or Outlook on the web
User impact: Users may be unable to send and receive emails in 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
Latest Microsoft 365 outages
Users may have been unable to access Microsoft 365 web-based services correctly when using Google Chrome - 1 day ago
Some users may be unable to access email messages in Outlook Mobile when connecting to Exchange on‑premises - 6 days ago
Users may experience issues accessing or using multiple Microsoft 365 services, including Microsoft Teams and Outlook - 8 days ago
The Status Page Aggregator with Early Outage Detection
With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.
Start free trialNo credit card required · Cancel anytime · 6320 services available
Integrations with
