User impact: Admins may have been unable to access the SharePoint Online admin center.

More info: Additionally, the top navigation suite bar (app launcher, search, and settings) didn’t load across SharePoint Online sites for any users.

When attempting to access the SharePoint Online admin center, admins may have seen the following error message:

“Sorry, something went wrong.”

Final status: We’ve determined that a portion of SharePoint Online infrastructure responsible for accessing the admin center encountered an issue with a specific authentication component which caused stale cached data to build and resulted in impact. We’ve repaired the authentication component issue and cleared the stale cache, we’ve received confirmation from some admins who initially reported the issue that the impact is remediated.

Scope of impact: Some admins or users attempting to access the SharePoint Online admin center or sites may be impacted.

Start time: Tuesday, February 24, 2026, at 3:30 PM UTC

End time: Tuesday, March 3, 2026, at 9:33 PM UTC

Root Cause: A portion of SharePoint Online infrastructure responsible for accessing the admin center encountered an issue with a specific authentication component which caused stale cached data to build and resulted in impact.

Next steps:
– We’re further investigating the portion of infrastructure in which the authentication component issue took place, so that we can help prevent similar problems from reoccurring.

This is the final update for the event.