Why OneDrive gets busy
- First sign-in or a new Mac, when it sets up every file it tracks.
- Large changes, like moving or renaming a big folder, which can mean checking thousands of files.
- Files that change constantly, such as code projects, databases or app caches stored inside OneDrive.
- Files On-Demand downloading items as you open them.
- Sync errors that make it retry the same files.
Recent versions of OneDrive for Mac use Apple's File Provider system, so you may also see fileproviderd busy while OneDrive syncs.
How to calm it down
- Check what it's doing. Click the OneDrive cloud icon in the menu bar to see what's syncing and whether anything has an error.
- Pause syncing when you need the speed: from the menu bar icon, open Help & Settings and choose to pause syncing for a few hours.
- Fix sync errors shown in the menu, such as files that are too large or have unsupported names, so it stops retrying them.
- Move busy folders out of OneDrive. Build output, node_modules, virtual machines and caches don't need syncing.
- Choose which folders sync in OneDrive's settings, if you only need some of them on this Mac.
- Update OneDrive and macOS, then restart if it stays busy with nothing to sync.