Reset OneDrive for Mac

Resetting Microsoft OneDrive resets all OneDrive settings for your account and sometimes resolves sync issues. OneDrive performs a full sync after the reset.


  • Resetting OneDrive disconnects only the existing sync connections for the account that you're signed in to. Any settings or connections for another account will remain in place.

  • You won't lose files or data by resetting OneDrive on your computer.

OneDrive might ask you if you want to reset if your files aren't syncing. Or you can start a reset yourself from Preferences.

You can continue working on your OneDrive files while reset is running and your changes will sync after the reset is complete.

How to start a reset on Mac

  1. Click the OneDrive cloud icon in the menu bar, click the three dots to open the menu, and select Preferences.

    Screenshot of setting OneDrive personal preferences

  2. Click the Account tab, and then select Reset OneDrive.

    Screenshot of adding an account in OneDrive preferences on a Mac

  3. In the Reset OneDrive dialog box, verify that you want to keep your settings or clear that check box, and then select Reset OneDrive.

  4. Relaunch OneDrive.


    • If you had chosen to sync only some folders before the reset, you'll need to do that again after sync has completed. Read Choose which OneDrive folders to sync to your computer for more information.

    • You'll need to complete this for your personal OneDrive and OneDrive for work or school.

What reset does

During a reset, OneDrive does the following:

  • Deletes the DAT file.

  • Stores the application logs in the registry [what's the analogous thing called on Mac?].

  • Stores the settings on the disk.

When OneDrive restarts, it checks with the registry to confirm the reset has taken place, and then loads the settings, and re-builds the DAT file. DFD is grabbed before the Reset. During the reset process we clear the logs and DFDs on disk. After completing reset a new DFD is generated and sent to run a diff to identify issues that were fixed with Reset. The DFDs are tagged to be linked for future analysis.

What to do if reset fails

If the reset doesn't finish, or finishes with errors, you can try the following remedies: Learn more - Make sure Mat populates the link with the information on Reset and advised actions for Failed Reset. Telemetry we collect: actions user takes on reset experience, the time the reset took, success or failure counts. We are measuring the feature funnel to see how many users started and completed the flow vs ones that "chickened out". Notes: ODB team sites selective sync is also preserved and restored as part of the Reset implementation. All UI settings, including Dark Mode are preserved.

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