⚠️ What happened
- Thousands of users experienced hours-long disruptions accessing Outlook across web, mobile, and desktop platforms, unable to load inboxes or sign in starting Wednesday night and continuing into Thursday July 10.
- Downdetector showed a peak of about 2,700–2,800 incident reports around noon ET
🛠️ Microsoft’s response
- Microsoft via its 365 status page and X (formerly Twitter) confirmed it was investigating and deploying a fix. After a delay due to an “issue with the initial fix,” they deployed a configuration change that “fully saturated” by ~3:30 p.m. ET, restoring service for all users.
- A Microsoft spokesperson declined to elaborate on the outage’s root cause.
⏳ Timeline & duration
- Outage began late Wednesday, persisted into Thursday morning (Pune local time).
- Peak disruptions around July 10, 12:00 p.m. ET, and by ~3:30 p.m. ET the issue was resolved.
- Microsoft estimates roughly 3–5 hours of partial to total system impact
🔍 What users experienced
- Outages affected Outlook.com, Outlook desktop app, and the Outlook mobile app—no workaround by switching platforms worked during the incident.
- Impact was global—though telemetry suggests the East Coast U.S. was among the worst-hit regions.
✔️ What users should do
- If you’re still seeing issues after the fix, use Microsoft’s Service Health Dashboard or check DownDetector and similar sites.
- If the platform shows as operational but you’re having local issues, try refreshing your browser, clearing cache, restarting the app/device, or flushing DNS.
