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Fix OneDrive for Business sync problems

First check that you can access your OneDrive for Business online, then try the other steps to get sync running on your PC.


  • This article is for users who are not Office 365 subscribers, and refers to the old version OneDrive for Business. If you do have an Office 365 work or school account, read how you can Fix OneDrive for Business sync problems for the newer version of OneDrive for Business. If you're not sure which version of OneDrive for Business you need, contact your Network Administrator.

  • In the images below, "Contoso" is a fictional name used by Microsoft as an example company. You should see your own organisation's name.

  1. Right-click the OneDrive cloud icon in the notification area, at the far right of the taskbar.

    OneDrive for business taskbar icon

    Note: You might need to click the Show hidden icons arrow next to the notification area to see the OneDrive icon, or click Press the Windows key and start typing "select which icons" to display the notification area settings option, and then show Microsoft OneDrive. If the icon still doesn't appear in the notification area, OneDrive might not be running. Click  Press the Windows key , type OneDrive in the search box, and then click OneDrive for Business in the search results.

  2. Select View online

If you cannot access your OneDrive for Business online, contact your Network Administrator.

OneDrive for Business is frequently updated. Make sure you have the most recent updates.

Tip: If you sync only OneDrive for Business accounts associated with Office 365, you might be able to use the OneDrive sync app. To find out more, see Sync files with OneDrive in Windows. If you're using a Mac, see Sync files with OneDrive on Mac OS X.


If you don’t have Office 365 and you need the OneDrive for Business sync app, you can download it for free.

Make sure that none of the files you want to sync are larger than 2GB. If you see an error message such as "This file is too big to upload" or "Reduce the size of this file to upload to..." try reducing the size of a file by zipping it. You may be able to reduce the file size of a picture.

Make sure the entire file path, including the file name, contains fewer than 250 characters. An example of a file path is:

Shorten the name of your file or the name of subfolders in OneDrive, or select a sub-folder that's closer to the top-level folder.

Learn more about Restrictions and limitations when you sync files and folders.

You may have sync conflicts if you're uploading multiple files on the OneDrive for Business site at the same time, or if you made changes in your OneDrive for Business folder on another PC that is syncing at the same time. Sync issues can also occur if you edit files offline.

To reduce sync conflicts, rename the edited files or folders to something new or unique, and then save it again.

Try to open the file or folder and make sure that you have permission to save a copy of it. If you're having problems seeing a file on a network, contact your network administrator.

If you are syncing a large OneDrive for Business library, check the available disk space on your PC

If you don't have enough disk space, you can either move or delete files (here are some tips about how to free up disk space), or you can download fewer files by choosing which OneDrive folders to sync to your computer.

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

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

If you are unsure of your library path, visit your SharePoint Team Site, and browse to your documents: the URL is your library path.

Once in your SharePoint team site, you can initiate a sync by click the Sync icon on the team site.

More choices

If the steps above haven't worked, then you may need to reinstall OneDrive. 

You won't lose files or data by reinstalling OneDrive on your computer. You can always access your files by signing in to your OneDrive for Business account online.

Before you begin, make sure you download the latest Windows updates.

  1. Read How to install OneDrive for Business and install the version you need.

  2. Press  Press the Windows key , search for OneDrive and then openOneDrive for Business

    Note: If shown, don't select "OneDrive" as that may be the newer version of OneDrive which could be for your personal account.

  3. When OneDrive Setup starts, enter your account credentials, and then select Sign in to set up your account. 

  4. Read How to include my Documents folder in OneDrive. to ensure that you sync the correct folders.

Learn more

Need more help?


Get online help
See more support pages for OneDrive and OneDrive for Business.
For the OneDrive mobile app, see Troubleshoot OneDrive mobile app problems.

Email Support icon

Email support
If you still need help, shake your mobile device while you're in the OneDrive app or email the OneDrive support team.

To contact OneDrive for Business support from your PC or Mac, select the OneDrive icon in the notification area or menu bar, then select More > Send feedback > I don't like something.

OneDrive for Business Admins can also view the OneDrive for Business Tech Community, Help for OneDrive for Business Admins, or contact Office 365 for business support.

Office 365 community forums

Letting us know your location may help us resolve your issue more quickly.

All fixed? If you contacted us and OneDrive starts working again, please let us know by replying to the email we sent you.

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