OneDrive Sync Service
OneDrive Sync Service is the background component of Microsoft OneDrive that keeps files and folders synchronized between your Mac and OneDrive.
What is OneDrive Sync Service?
OneDrive Sync Service is a background helper installed with Microsoft OneDrive on macOS. It supports file synchronization between your Mac and your OneDrive account so documents, photos, and other folders stay consistent across devices and the web. People using personal Microsoft accounts, Microsoft 365, or work and school accounts encounter it when OneDrive is set to run in the background after sign-in. Its job is to handle ongoing sync activity, monitor changes, and support features such as offline access to synced files through Finder. Because it runs behind the scenes, many users only notice it in login items, Activity Monitor, or when troubleshooting sync behavior.
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Safety overview
Status: Mostly safe
A background sync helper inside /Applications/OneDrive.app is consistent with Microsoft OneDrive’s normal behavior on Mac. It may use background processing, network access, notifications, and Finder integration so files can stay in sync. Review it more carefully if you do not use OneDrive, if the item launches even after OneDrive was removed, or if the app at that path is not signed by Microsoft.
Recommendation: Keep this item enabled if you use OneDrive to sync or back up files on your Mac. Disable it if you do not want OneDrive running automatically at login, but expect cloud sync, status updates, and automatic background file transfers to stop until you open OneDrive manually.
File path
/Applications/OneDrive.app/Contents/OneDrive Sync Service.app
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