How to Fix OneDrive Sync Problem on MacOS

1. Go to Service Health portal and check the status of Microsoft Office Online Services.
   Note: If you see the message, "Your account is currently unavailable" your account might be temporarily blocked. This may due to a large volume of traffic, suspicious activity, or violation of Microsoft Services Agreement or code of conduct. Go to OneDrive Account Activation  page to reactivate your account.

   If you have a OneDrive for Business account, ensure that you have permission to access the file or folder that you are trying to add. If the problem persists, contact your network administrator

2. Take the following steps if you have online access to OneDrive.
   • Check if OneDrive is running
     1. Click the OneDrive icon in the menu bar or check the Activity Monitor by pressing Command + Spacebar.
     2. Click the CPU tab then check OneDrive under Process Column.
   • Restart OneDrive
     1. Click the OneDrive icon in the menu bar.
     2. Click Quit OneDrive.
     3. Open the OneDrive application again using Spotlight.
   • Update OneDrive sync app
     1. Open the Mac App Store then click the Update button in the toolbar.
     2. Check if there is an available update for OneDrive; if yes, then update the app.
        Note: Alternatively, check if there is an Update button in the OneDrive app.
   • Check computer storage

     1. Check the available disk space on your computer and your OneDrive storage. If you there is not enough space, you have to move or delete some files or reduce the number of files and folders. For more information, check out Delete files and folders on Mac.

3. If the abovementioned steps did not work, you may have to reinstall OneDrive. Take the following steps to reinstall OneDrive.
   1. Ensure that your computer is updated.
   2. Click the Launchpad icon in the dock.
   3. Hold down the OneDrive application icon until all icons jiggle.
   4. Click the x icon in the top corner of OneDrive application.
   5. Download the latest version of OneDrive application.

Check out the following links to know how to solve OneDrive sync problems with Windows and Mobile.

1. How to Fix OneDrive Sync Problem in Windows
2. Troubleshoot OneDrive for Android app problems
3. Troubleshoot OneDrive for iOS app problems
4. Troubleshoot OneDrive for Windows Phone app problems