OneDrive File Issues

How to Fix Large Numbers of OneDrive Sync Errors

Amos Gikunda Oct 10, 2026 870 views

Question details

The user needs to quickly resolve a large volume of file synchronization errors in Microsoft OneDrive.

How to Resolve Large Numbers of OneDrive Sync Errors Faster

Product: Microsoft OneDrive
Device & OS: not provided
Scenario: Syncing a large batch of files or folders to OneDrive where multiple items fail to upload or download.
Observed behavior: OneDrive displays numerous synchronization errors, often caused by unsupported characters in filenames, duplicate items, permissions, or unsynchronized file conflicts.

Before you start

Before resetting the application, review the list of failing files in the OneDrive menu and temporarily copy any unsynced local documents to a safe backup folder to prevent data loss.

Solution 1Recommended

Reset the OneDrive Desktop Application

Resetting the OneDrive app is the fastest way to clear persistent sync conflicts and force the engine to resynchronize your files from scratch.

Open the Run dialog

Press the Windows key + R on your keyboard to open the Run window.

Execute the primary reset command

Type %localappdata%\Microsoft\OneDrive\onedrive.exe /reset into the dialog box and press Enter or click OK.

Use alternative paths if not found

If you see a 'Windows cannot find' error, try entering C:\Program Files\Microsoft OneDrive\onedrive.exe /reset instead. If that also fails, use C:\Program Files (x86)\Microsoft OneDrive\onedrive.exe /reset.

Restart OneDrive

Wait a few minutes. If the OneDrive icon does not automatically reappear in your system tray, open the Start menu, search for OneDrive, and click to open it. Sign in again if prompted.

Data Safety Guarantee: Executing the reset command will not delete any of your personal files or cloud data. It simply restarts the syncing process and refreshes application settings.

Solution 2

Fix Unsupported File Names and Restrictions

OneDrive strictly prohibits certain characters and naming conventions. Removing these from your files will clear up many immediate sync errors.

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Frequently Asked Questions

Will running the OneDrive reset command delete my files?

No. Running the reset command only restarts the OneDrive synchronization engine and resets app settings. Your local files and the files already backed up in the cloud remain perfectly safe.

Why do some normal-looking file names cause OneDrive sync errors?

Files can fail to sync if the entire file path (including all parent folder names) is too long, or if the name contains leading or trailing spaces. Additionally, system-reserved names are unsupported by Windows and OneDrive.

What should I do if the Run dialog says 'Windows cannot find' when I try to reset OneDrive?

This simply means OneDrive is installed in a different directory on your computer. Try using the alternative paths provided in the solution, such as C:\Program Files\Microsoft OneDrive\onedrive.exe /reset or C:\Program Files (x86)\Microsoft OneDrive\onedrive.exe /reset.

Document & File Issues