I cannot open OneDrive on my Mac and your help files don't apply to my situation.

E. M. Insall 20 Reputation points
2026-10-04T00:33:22.3266667+00:00

I cannot open OneDrive on my Mac and your help files don't apply to my situation.

Microsoft 365 and Office | OneDrive | Other | MacOS
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2026-10-04T00:33:37.48+00:00

Try these Mac-specific OneDrive recovery steps in order:

  1. Check whether OneDrive is actually running.
    • Look for the OneDrive cloud icon in the top Menu bar.
    • If it is not there, open Applications and find OneDrive.
  2. Reset the OneDrive app from the app bundle.
    • In Applications, right-click OneDrive and select Show Package Contents.
    • Open Contents > Resources.
    • Double-click ResetOneDriveApp.command.
    • If using the standalone app, run ResetOneDriveAppStandalone.command instead.
    • Start OneDrive again and complete setup.
  3. Install the latest Mac version of OneDrive.
    • If OneDrive still does not open, install the latest version for macOS.
    • If the latest version is already installed, the installer will end automatically.
  4. If macOS was recently updated and OneDrive is stuck on Processing changes:
    • On macOS Big Sur, this can happen after the OS upgrade because of a VolumeID change.
    • No action is required; wait for the changes to complete.
  5. If the error says A different version of the OneDrive app is already connected to this account:
    • This usually means both the standalone and App Store versions are installed.
    • Remove the previous installation by running the reset script inside the app bundle:
      • Right-click or CTRL-click the OneDrive app
      • Select Show package contents
      • Open Contents/resources/reset*.command
    • Then install the preferred version again.
  6. If the error says OneDrive couldn't start on macOS 12.1 or later:
    • Close and re-open OneDrive.
    • Restart the Mac.
    • If the message mentions a system component, restart the Mac and make sure macOS is updated to the latest version.
    • If the message says the file system is unsupported, OneDrive requires APFS on macOS 12.1 or later.
    • If the message says the OneDrive folder is locked or cannot be written, unlock the folder and make sure it is fully writable, then restart OneDrive.
  7. Check whether the account works online.
    • Select the OneDrive cloud icon in the Menu bar, open the menu, and select View online.
    • If sign-in online also fails, check the Microsoft Office Online Services status in the Service Health portal.

If none of these steps resolves it:

  • For personal accounts, use Contact Microsoft Support.
  • For work or school accounts, contact the organization’s IT helpdesk or admin.
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  1. Hendrix-V 19,485 Reputation points Microsoft External Staff Moderator
    2026-10-04T05:20:33.7733333+00:00

    Hi E. M. Insall,

    It would be helpful to narrow down what's preventing OneDrive from opening on your Mac.

    Could you let us know:

    • Which macOS version you're using?
    • Is this a personal Microsoft account or a work/school account?
    • What happens when you try to open OneDrive (nothing happens, it bounces in the Dock, shows an error, etc.)?
    • Do you see any error messages or prompts?
    • Did the issue start after a recent macOS or OneDrive update?

    If possible, please include a screenshot of any error message. That information can help identify whether this is a sign-in issue, a permissions problem, or an application launch issue and allow us to suggest more targeted steps.

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