Office for Mac Issues

Fix OneDrive Crashing During Personal Account Sign-In on Mac

Maira Mehtab Sep 21, 2026 868 views

Question details

The user is experiencing an issue where the OneDrive application crashes and fails to sync when attempting to sign in to a personal account via the macOS menu bar.

Product: Microsoft OneDrive
Device & OS: MacBook Air (M3 chip) / macOS
Scenario: Adding a personal OneDrive account from the Mac menu bar after restoring data using a Time Machine migration.
Observed behavior: The corporate OneDrive account functions normally, but attempting to add a personal account causes the app to crash. Standard reinstallations and resets have not resolved the behavior.

Before you start

Verify that your macOS is fully updated and temporarily disable any third-party network monitoring tools or firewalls that might be interfering with OneDrive's authentication servers.

Solution 1Recommended

Change the Account Sign-In Sequence

Signing into your personal account before your work account can often bypass the authentication conflicts that trigger application crashes.

When multiple accounts share the same OneDrive client, credential cache conflicts can occur, especially after migrating data to a new Mac. Establishing the personal account connection first resolves most authentication loops.

Unlink the corporate account

Click the OneDrive icon in the menu bar, navigate to the 'Account' tab in Preferences, and click 'Unlink this Mac' for your work account.

Sign in to the personal account first

Restart the OneDrive application and enter your personal Microsoft account credentials to establish the initial sync configuration.

Add the corporate account

Once the personal account is syncing successfully and is stable, return to OneDrive Preferences, click 'Add an account', and enter your corporate credentials.

Initial Sync Duration: Allow the personal account to fully complete its initial 'Processing changes' phase before attempting to add the corporate account.

Solution 2

Install OneDrive from the Mac App Store

Using the Mac App Store version of OneDrive can resolve background permission and sandboxing issues that may have carried over during the Time Machine migration.

Solution 3

Perform a Deep Reset of OneDrive

If standard uninstallation fails, running Microsoft's official reset script via Terminal will clear out corrupted cache files and faulty preferences.

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Frequently Asked Questions

Why does OneDrive crash after a Time Machine migration?

Time Machine migrations can sometimes copy over corrupted application caches, outdated permission files, or conflicting Keychain entries. This leads to authentication loops or crashes when OneDrive tries to access your Mac's security systems to verify a new personal account.

Is there a difference between the Mac App Store version of OneDrive and the standalone download?

Yes. The Mac App Store version operates within Apple's strict sandboxing rules. This isolation can sometimes bypass specific system permission bugs or library conflicts found in the standalone version downloaded directly from Microsoft's website.

How do I check which version of OneDrive I am running on my Mac?

Click the OneDrive cloud icon in your Mac's menu bar, click the gear icon for 'Help & Settings', select 'Preferences', and navigate to the 'About' tab. Your version number and architecture (e.g., Apple Silicon) will be displayed there.

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