Onedrive saving duplicate files with Computer name

I've seen similar behavior when there's a sync conflict between devices. You might want to check if multiple computers are connected to the same OneDrive account. Also, try pausing sync and restarting it. it sometimes helps resolve the duplication.

Same problem. Resulting in two different versions of same file. According to this

https://support.nhs.net/2024/03/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-2/

its status is resolved, but still experiencing the issue.

I've been having the same issue - believe its due to this service health issue: 

Some users opening SharePoint Online or Microsoft OneDrive-hosted files in File Explorer may be unable to autosave files

Issue ID: OD1088089
Affected services: Microsoft OneDrive
Status: Service degradation
Issue type: Advisory
Start time: Jun 4, 2025, 12:57 PM PDT

User impact
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 we're focused on remediation, users that have access to Microsoft 365 for the web apps may use these clients to retain expected autosave functionality.

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.