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Microsoft 365 Outage Resolved After Hours-Long Disruption
24 Jan
Summary
- Thousands of Microsoft 365 users reported outages on Jan. 22.
- Microsoft Exchange was the most affected service, impacting 66% of users.
- Microsoft declared the service disruption resolved early Jan. 23.
A widespread outage impacting Microsoft 365 services concluded early on Friday, January 23, after affecting thousands of users throughout the previous day. The disruption began on the afternoon of Thursday, January 22, with peak reports exceeding 15,000 affected users.
Microsoft Exchange, the core enterprise messaging and collaboration platform, was the most severely impacted component, accounting for 66% of reported issues. Other affected services included the Microsoft 365 Administration Center, utilized by IT teams. Microsoft initially stated they were investigating the issue, with subsequent updates detailing efforts to refine load balancing and restore affected infrastructure.
By approximately 1:30 AM on January 23, Microsoft confirmed that the "impact has been resolved," though a few hundred users continued to report residual problems. The company directed users to its service status page for further information regarding the ongoing recovery efforts.
