Microsoft is currently addressing a significant outage affecting its Microsoft 365 suite, particularly impacting Office web applications and the admin center. Users worldwide have reported difficulties accessing various services including Outlook, OneDrive, and other Office 365 applications.

The Issue:
– Users attempting to access web-based Microsoft 365 apps are receiving service outage notifications
– Authentication infrastructure experiencing token generation problems
– Impact limited to specific users accessing web-based Microsoft 365 applications

Temporary Solution:
Microsoft recommends users access their applications through desktop versions where possible, provided they have appropriate licensing.

Timeline and Updates:
– Initial outage reported with widespread user complaints
– Microsoft identified token generation issues in authentication infrastructure
– Fix deployment initiated with an estimated two-hour resolution timeframe
– Problem traced to recent service changes affecting token expiry time identification

Recent History:
This incident follows two major disruptions:
– Two weeks ago: Multiple services affected including Teams, Exchange Online, and SharePoint
– July 2023: Major Azure and Microsoft 365 outage caused by DDoS attack

Resolution:
Microsoft has confirmed the deployment of a fix by disabling proactive caching and implementing alternative token generation processes. The company reports the issue has been resolved following service telemetry monitoring.