Microsoft 365 Alert – Service Degradation – Microsoft OneDrive – Some users opening SharePoint Online or Microsoft OneDrive-hosted files in File Explorer may be unable to autosave files – RESOLVED

Announcements Arpan Das

05/06/2025 08:54:00 AM

NHSmail Reference: INC46547259

Microsoft Reference: OD1088089

Issue Status: RESOLVED

Issue Description: Users opening SharePoint Online or OneDrive-hosted files in File Explorer may be unable to autosave the files.

More info: This specifically affects users opening files within Microsoft 365 apps, such as Word or Excel. While Microsoft are focused on remediation, users that have access to Microsoft 365 for the web apps may use these clients to retain expected autosave functionality.

Final Update: 17/06/2025 08:25:00 AM – Microsoft have completed their monitoring to ensure objects are syncing as expected and, after validating the impact is remediated with a subset of affected users, they have confirmed the issue is resolved.

Scope of impact: This issue may affect any user opening SharePoint Online or OneDrive-hosted files in File Explorer while running the OneDrive sync client version 25.085.0504.0002.

Root cause: A recent OneDrive sync client build update, version 25.085.0504.0002, contains an issue that’s preventing the app from behaving as expected during the upgrade, which is leading to this impact.

Next Steps: Microsoft are reviewing their build update policies to ensure similar issues are identified and addressed before changes are deployed to prevent this from happening again.