Check your internet connection to ensure it is stable and not metered. 2. Restart OneDrive by closing it via system tray or menu bar and relaunching the app. 3. Pause and resume sync to reset the syncing queue and reconnect to the server. 4. Check for file naming or size issues such as invalid characters, oversized files, or long paths, and resolve them. 5. Clear the OneDrive cache by deleting the contents of the version-named subfolder in %localappdata%\Microsoft\OneDrive\ to fix corrupted local data. 6. Re-sync your library as a last resort by unlinking your account, restarting your device, and setting up OneDrive again. These steps resolve most sync pending issues effectively, with the problem typically being temporary and caused by connectivity, file restrictions, or software glitches, and if issues persist, check Microsoft’s Service Status page for outages.
OneDrive sync pending issues can be frustrating—files stuck "syncing" or not updating across devices. The good news is most sync delays aren’t permanent and can be fixed with a few straightforward steps. Here’s how to resolve OneDrive sync pending problems effectively.

1. Check Your Internet Connection
Syncing requires a stable internet connection. If your network is slow or unstable, OneDrive may appear stuck.
- Make sure you’re connected to Wi-Fi or Ethernet.
- Test your internet speed (use sites like speedtest.net).
- Avoid using metered connections—OneDrive limits background sync on metered networks.
? Tip: Go to Settings > Network & Internet > Wi-Fi > [Your Network] > Set as metered connection and ensure it’s turned off.
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2. Restart OneDrive
Sometimes the sync engine just needs a fresh start.
On Windows:

- Right-click the OneDrive cloud icon in the system tray (bottom-right).
- Select Close OneDrive.
- Press
Ctrl Shift Esc
to open Task Manager. - End any remaining OneDrive.exe processes.
- Press
Win R
, typeonedrive
, and press Enter to restart it.
On Mac:
- Click the OneDrive icon in the menu bar.
- Choose Quit OneDrive.
- Relaunch OneDrive from Applications or login items.
This often clears temporary glitches causing sync to hang.
3. Pause and Resume Sync
Manually pausing and resuming sync can reset the syncing queue.
- Click the OneDrive icon in the system tray.
- Click the Pause sync button (two pause bars).
- Wait 30 seconds.
- Click Resume sync.
This forces OneDrive to recheck pending files and reconnect to the server.
4. Check for File Naming or Size Issues
OneDrive has restrictions that can block sync:
- Filenames can’t contain:
\ / : * ? " |
- File size limit: 100 GB for personal accounts, 250 GB for work/school.
- Path length must be under 400 characters (including folder names).
? To find problematic files:
- Open OneDrive settings > Sync and reset > View sync problems.
- Look for error messages about invalid names or sizes.
Rename or move large/incompatible files to resolve the block.
5. Clear OneDrive Cache (Advanced)
A corrupted local cache can cause sync to stall.
?? This will re-sync your files, so ensure you have good bandwidth.
- Close OneDrive (via Task Manager or system menu).
- Press
Win R
, type%localappdata%\Microsoft\OneDrive\
, press Enter. - Delete the contents of the 19.221.1108.0008 (or similar version-named) folder.
- Don’t delete the entire OneDrive folder—just the version subfolder.
- Restart OneDrive.
It will rebuild the cache and re-sync metadata, often fixing stuck items.
6. Re-sync Your Library (Last Resort)
If nothing works, unlink and re-add your account.
- Right-click OneDrive icon > Settings > Account tab.
- Select your account > Unlink this PC.
- Restart your computer.
- Reopen OneDrive and sign in again.
- Choose which folders to sync.
?? This takes time and bandwidth, but it’s the most thorough fix.
Sync pending issues are usually temporary and tied to connectivity, file issues, or software glitches. Most cases are resolved by restarting OneDrive or fixing file names. If the problem persists across devices, check Microsoft’s Service Status page for outages.
Basically, start simple—restart, check internet, look for bad filenames—then escalate if needed.
The above is the detailed content of How to fix OneDrive sync pending. For more information, please follow other related articles on the PHP Chinese website!

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