Fix OneDrive for Business sync problems

If you can't sync files between your computer and OneDrive for Business, it might be due to problems with the OneDrive for Business sync client. If the OneDrive for Business sync client isn't functioning properly, follow the steps in this article to fix the problem.

Follow these steps to fix your OneDrive for Business sync problems

If you don’t have the OneDrive for Business sync app, you can download it free.


Step 1: Make sure that the OneDrive for Business sync app is up-to-date

OneDrive for Business is frequently updated. Make sure that you have the most current version of OneDrive for Business installed.

Step 2: Make sure that your file and folder names don't contain unsupported characters or invalid file types

If a file or folder name contains certain characters or file types, you won’t be able to sync those files. Review the list of invalid characters and file types, and change any file or folder names, or remove the file types that aren’t supported.

Step 3: Make sure that your file sizes, items counts, and file path lengths are within the limits

If a file you’re trying to sync is too large, or if you’re trying to sync too many items, OneDrive for Business sync might not work. Review the limits for the size and number of files that can be synced, and make sure the files you’re trying to sync don’t fall within the listed restrictions or limitations.

Step 4: Repair a OneDrive for Business sync connection

Follow these quick steps to repair a sync connection with OneDrive for Business, and see if that fixes your sync problem.

Step 5: Stop and restart syncing for a OneDrive for Business library

If you’re having problems with a synced library folder, it’s sometimes simplest to just stop syncing the library, and then start syncing the library again, as if for the first time.

Step 6: Use the OneDrive for Business Sync Issues Troubleshooting Guide

If you’re still experiencing sync problems, try the OneDrive for Business Sync Issues Troubleshooting Guide. This tool can help guide you through diagnosing and resolving issues with libraries you’re currently syncing.

Still having sync issues?

If you're still having sync issues, try posting a question in the Office 365 community forums. They’re a great resource, and they're monitored by Microsoft support agents who can help if you’ve tried the steps here and are still stuck. You can also contact Office 365 for business support.

Still need help?

Get help from the Office 365 community forums Admins: Sign in and create a service request Admins: Call Support

Applies To: Office 365 End User, Office 365 Small Business Admin, SharePoint admin center, SharePoint Online, SharePoint Server 2013 Enterprise, OneDrive for Business, SharePoint Server 2013, Office 365 Admin

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