Outage in Microsoft 365
Admins intermittently may be unable to access the Microsoft 365 admin center
Resolved Minor
October 05, 2026 - Started about 4 hours ago
- Lasted about 3 hours
Incident Report
Summary AI Generated
Microsoft 365 admins experienced intermittent inability to access the admin center for approximately 3 hours starting October 5, 2026 at 10:28 PM UTC. The issue was caused by an unusually large spike in requests to the admin center, resulting in queued and timed-out connections. Microsoft implemented performance optimizations that restored service availability to pre-impact levels, while investigation into the root cause continued to prevent recurrence.
Title: Some admins can't access the Microsoft 365 admin portal
User impact: Admins may be unable to access the Microsoft 365 admin portal.
Current status: We're investigating a potential issue impacting admin access to the Microsoft 365 admin portal in certain regions and we're checking for impact to your organization. We'll provide an update within 30 minutes.
Components affected
Microsoft 365 suiteTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
about 2 hours ago - at 10/06/2026 12:08AM
Title: Admins intermittently may be unable to access the Microsoft 365 admin center
User impact: Admins intermittently may be unable to access the Microsoft 365 admin center.
Current status: We're continuing to analyze the unusually large increase in requests to the Microsoft 365 admin center along with recent service updates to isolate potential sources of impact that contributed to the traffic increase. We’ve implemented performance optimizations to assist with processing affected traffic and we've validated that service availability has recovered to pre-impact levels. We're continuing our investigation in order to isolate and remediate the underlying root cause to ensure the similar scenario does not occur again in the future.
Scope of impact: Admins attempting to access the Microsoft 365 admin center may be intermittently affected. This section may be updated as the investigation progresses.
Start time: Monday, October 5, 2026, at 10:28 PM UTC
Next update by: Tuesday, October 6, 2026, at 1:30 AM UTC
about 2 hours ago - at 10/05/2026 11:38PM
Title: Admins intermittently may be unable to access the Microsoft 365 admin center
User impact: Admins intermittently may be unable to access the Microsoft 365 admin center.
Current status: We’re investigating an unusually large increase in requests to the Microsoft 365 admin center and expect that this increase is resulting in requests queuing and timing-out. We’re reviewing options for mitigating this issue and determining if other factors are contributing to the problem.
Scope of impact: Admins attempting to access the Microsoft 365 admin center may be intermittently affected. This section may be updated as the investigation progresses.
Next update by: Tuesday, October 6, 2026, at 12:30 AM UTC
about 3 hours ago - at 10/05/2026 11:19PM
Title: Some admins can't access the Microsoft 365 admin portal
User impact: Admins may be unable to access the Microsoft 365 admin portal.
Current status: We're investigating a potential issue impacting admin access to the Microsoft 365 admin portal in certain regions and we're checking for impact to your organization. We'll provide an update within 30 minutes.
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