OneDrive Sync Stuck on Processing? 9 Proven Fixes (2026)

Table of Contents

• Why OneDrive Sync Stuck on Processing Occurs
• Method 1: Close Open OneDrive Files
• Method 2: Pause and Resume Syncing
• Method 3: Restart OneDrive
• Method 4: Check for Large or Problematic Files
• Method 5: Run the Windows OneDrive Troubleshooter
• Method 6: Clear the Office Document Cache
• Method 7: Reset OneDrive
• Method 8: Unlink and Re-link OneDrive
• Method 9: Uninstall and Reinstall OneDrive
• Frequently Asked Questions

OneDrive sync stuck on processing is one of the most frustrating issues Microsoft OneDrive users face. When OneDrive sync stuck on processing occurs, the OneDrive icon shows “Processing Changes” indefinitely, files fail to upload or download, and the sync engine appears frozen. According to Microsoft’s official support documentation, the “Processing changes” loop happens when OneDrive’s local database gets corrupted, freezing the sync engine[reference:0]. This issue can also stem from open files, large attachments, hidden files, or network problems[reference:1]. This guide covers every possible cause and provides clear, step-by-step fixes to resolve OneDrive sync stuck on processing on Windows 10 and Windows 11.

For more Microsoft Office troubleshooting guides, visit our Microsoft Office Troubleshooting Hub. You can also check our guide on OneDrive sign-in issues, our guide on Office activation errors, and our guide on Outlook send problems for additional help.

For additional assistance, refer to Microsoft’s official support page and check the server status at DownDetector.

Why OneDrive Sync Stuck on Processing Occurs

Several factors can cause OneDrive to get stuck on “Processing Changes.” According to Microsoft’s support documentation and community experts, the issue is often related to corrupted local databases, open files, or problematic files[reference:4][reference:5].

Here are the most common reasons why OneDrive sync stuck on processing happens:

• Corrupted Local Database: OneDrive’s local sync database can become corrupted, freezing the sync engine[reference:6].
• Open OneDrive Files: A OneDrive file is still open in an app (Word, Excel, PowerPoint, etc.). Closing the file can resolve the issue[reference:7].
• Large Files: Very large files (ZIP archives, long videos, Outlook PST/OST files) can take a long time or block sync[reference:8].
• Large Number of Files: A large number of files were recently added or changed. OneDrive may need time to upload them[reference:9].
• Hidden or Temporary Files: Temporary or hidden files may be blocking sync[reference:10].
• Slow Internet Connection: A slow connection can cause syncing to take an extended period[reference:11].
• Not Signed In: You may not be signed in to OneDrive, or you recently changed your Microsoft account password[reference:12].

Method 1: Close Open OneDrive Files

According to Microsoft’s support documentation, the most common cause of OneDrive sync stuck on processing is an open OneDrive file. If a file is still open in an app (Word, Excel, PowerPoint, etc.), OneDrive cannot sync it[reference:14].

1. Close any Office documents or files stored in OneDrive that are currently open[reference:15].
2. Check for files that might be open in the background (e.g., hidden Excel or Word processes).
3. Wait a few minutes for OneDrive to detect the changes[reference:16].
4. Check the OneDrive icon to see if the “Processing Changes” message clears.

Method 2: Pause and Resume Syncing

If OneDrive sync stuck on processing persists, pausing and resuming syncing can refresh the sync engine and clear temporary glitches[reference:17].

1. Right-click the OneDrive cloud icon in the taskbar notification area.
2. Select Pause syncing and choose a duration (2, 8, or 24 hours)[reference:18].
3. Wait a few moments for OneDrive to pause.
4. After the pause duration expires, OneDrive will automatically resume syncing.
5. Alternatively, right-click the OneDrive icon again and select Resume syncing[reference:19].

Method 3: Restart OneDrive

Restarting OneDrive can refresh the sync process and resolve OneDrive sync stuck on processing[reference:20][reference:21].

1. Right-click the OneDrive cloud icon in the taskbar.
2. Select Quit OneDrive or Close OneDrive[reference:22].
3. Wait a few seconds.
4. Open your Start menu, type “OneDrive”, and click on the OneDrive desktop app to relaunch it[reference:23].
5. After restarting, check if the sync completes.

Method 4: Check for Large or Problematic Files

If OneDrive sync stuck on processing continues, large or problematic files may be causing the issue. According to Microsoft, very large files (ZIP archives, long videos, Outlook PST/OST files) can take a long time or block sync[reference:24].

1. Check if any large files (over 1 GB) are in your OneDrive folder[reference:25].
2. Identify problematic files such as ZIP archives, video files, or Outlook PST/OST data files[reference:26].
3. Move large files out of the OneDrive folder, or exclude the folder containing them from sync[reference:27].
4. Any OneDrive log files named “aria-debug” can be safely deleted[reference:28].
5. After removing or excluding problematic files, restart OneDrive and check sync status.

Method 5: Run the Windows OneDrive Troubleshooter

Windows 11 and Windows 10 include a built-in troubleshooter for OneDrive that can automatically diagnose and fix sync issues[reference:29].

1. Open Settings (Windows + I).
2. Go to System > Troubleshoot > Other troubleshooters (Windows 11) or Update & Security > Troubleshoot > Additional troubleshooters (Windows 10)[reference:30].
3. Look for OneDrive in the list of troubleshooters.
4. Click Run and follow the on-screen prompts.
5. After the troubleshooter completes, restart your computer and check OneDrive.

Method 6: Clear the Office Document Cache

Stuck Office cache files can block OneDrive syncing. According to Microsoft experts, clearing the Office document cache can resolve OneDrive sync stuck on processing[reference:31].

1. Close all Office apps (Word, Excel, PowerPoint, Outlook)[reference:32].
2. Search Windows for Office Upload Center or Office Document Cache[reference:33].
3. Open the Office Upload Center.
4. Click Settings and select Delete cached files.
5. Confirm the deletion and close the Upload Center[reference:34].
6. Restart your computer and check if OneDrive sync completes.

Method 7: Reset OneDrive

Resetting OneDrive is the official Microsoft solution to clear the stuck cache without deleting your files[reference:35][reference:36]. According to Microsoft Q&A experts, resetting the client is the most effective way to resolve OneDrive sync stuck on processing when other methods fail[reference:37].

1. Right-click the OneDrive cloud icon and select Quit OneDrive.
2. Press Windows + R to open the Run dialog[reference:40].
3. Type the following command and press Enter: %localappdata%\Microsoft\OneDrive\onedrive.exe /reset[reference:41][reference:42].
4. If you see a “Windows cannot find…” message, try this path instead: C:\Program Files\Microsoft OneDrive\onedrive.exe /reset[reference:43].
5. If that also fails, try: C:\Program Files (x86)\Microsoft OneDrive\onedrive.exe /reset[reference:44].
6. The taskbar icon will disappear for a minute or two[reference:45].
7. If it does not reappear automatically, restart OneDrive by typing “OneDrive” in the Start menu and launching the app[reference:46].

Method 8: Unlink and Re-link OneDrive

If resetting does not resolve OneDrive sync stuck on processing, unlinking and re-linking your OneDrive account can reset the sync connection[reference:47][reference:48].

1. Right-click the OneDrive cloud icon in the taskbar.
2. Select Help & Settings > Settings[reference:49].
3. Go to the Account tab.
4. Click Unlink this PC[reference:50].
5. Confirm the unlink operation.
6. Restart your computer[reference:51].
7. Open OneDrive and sign back in with your Microsoft account[reference:52].
8. Re-select the folders you want to sync.

Method 9: Uninstall and Reinstall OneDrive

If all else fails and OneDrive sync stuck on processing persists, uninstalling and reinstalling OneDrive can resolve deeply corrupted installations[reference:53].

1. Open Settings > Apps > Installed apps (Windows 11) or Settings > Apps > Apps & features (Windows 10).
2. Find Microsoft OneDrive in the list.
3. Select it and click Uninstall[reference:54].
4. Follow the on-screen prompts to complete the uninstallation.
5. Restart your computer.
6. Download and install the latest version of OneDrive from Microsoft’s official website.
7. Sign in and re-select your folders to sync.

Conclusion: Resolving This OneDrive Sync Issue

When OneDrive sync stuck on processing occurs, start with the simplest fixes: close any open OneDrive files, pause and resume syncing, and restart OneDrive. Most cases of this error resolve with these steps. If the problem persists, check for large files, run the Windows OneDrive troubleshooter, or clear the Office Document Cache. For more stubborn cases, reset OneDrive using the official Microsoft command, unlink and re-link your account, or uninstall and reinstall the app. By following this guide, you can resolve OneDrive sync stuck on processing and get your files syncing again.

Frequently Asked Questions