Admins may be unable to access the Microsoft 365 admin center

Title: Admins may be unable to access the Microsoft 365 admin center User impact: Admins may have been unable to access the Microsoft 365 admin center. Final status: We’ve determined that an issue affecting an Azure Key Vault dependency caused the Microsoft 365 admin center to become unavailable. We’ve restarted the affected dependencies to remediate the impact and completed recovery actions across the affected regions. We’ve confirmed from our telemetry that this issue is no longer occurring. Scope of impact: Any admins hosted on the affected infrastructure in Department of Defense, Government Community Cloud High, and some admins in the West US regions were impacted. Start time: Thursday, July 23, 2026, at 6:00 PM UTC End time: Friday, July 24, 2026, at 12:00 AM UTC Root cause: An issue affecting an Azure Key Vault dependency caused the Microsoft 365 admin center to become unavailable. Next steps: We’re continuing our review of the event to determine how we can prevent similar impact from occurring again. This is the final update for the event.