How to Fix OneDrive Sync Errors

Tap each step to follow along in order.

  1. Check the OneDrive icon in your taskbar

    Click the OneDrive cloud icon in your taskbar to check the sync status -- an exclamation mark or red X means a file has run into an error.

  2. Check the list of problem files

    After clicking the icon, select an unsynced file from the notification list to see the specific reason for the error.

  3. Pause sync, then resume it

    Click the icon, choose the gear icon, and select "Pause syncing" for a couple of hours before resuming -- this resolves many temporary glitches on its own.

  4. Check file names and storage space

    Sync can fail if a file name contains unsupported characters like backslashes, colons, asterisks, or quotation marks, or if your storage is full, so rule these out first.

  5. Restart the OneDrive app

    End the OneDrive process in Task Manager, then relaunch it from your Start menu -- this often clears the error state.

Why do sync errors happen so often?

OneDrive sync errors commonly come from file names containing unsupported characters, storage running full, or an unstable network connection. Checking the icon's status is usually the fastest way to spot the cause.

A few habits that prevent future sync errors

Keeping file and folder names simple, avoiding special characters, checking your remaining storage occasionally, and closing large files before switching networks all go a long way toward keeping sync running smoothly without repeated errors.

Frequently Asked Questions

If I pause syncing, do already-uploaded files disappear?

No -- pausing only stops new changes from uploading or downloading, so it has no effect on files that are already synced.

Does unlinking my account delete files already on my computer?

No -- unlinking leaves any files that were already downloaded right where they are on your computer, it just stops further syncing until you reconnect.