Office for Mac Issues

Fix OneNote for Mac Sign-In and Synchronization Problems

Huma Ashraf ChHuma Ashraf Ch Oct 22, 2026 870 views

Question details

The user needs to resolve sign-in and synchronization errors in OneNote for Mac caused by the application remaining connected to the wrong Microsoft account.

How to Fix OneNote for Mac Sign-In and Synchronization Problems
Product
Microsoft OneNote for Mac
Device & OS
macOS
Scenario
Attempting to switch to the correct Microsoft account or synchronize notebooks when OneNote is stuck on an incorrect account.
Observed behavior
OneNote stays connected to the wrong account, prevents signing in to a new account, fails to synchronize notebooks, or restricts access to read-only mode.
Before you start

Before making account changes or reinstalling OneNote, manually copy and paste any unsynchronized notes into a local document to prevent accidental data loss.

Solution 1Recommended

Sign Out of the Incorrect Account via OneDrive and macOS Settings

Clearing the incorrect account connection from OneDrive and macOS Internet Accounts usually breaks the sign-in loop and restores normal synchronization.

Because Office applications share authentication tokens on macOS, an incorrect account logged into OneDrive can force OneNote to use the same credentials.

1
Close OneNote

Completely quit the OneNote application on your Mac to ensure no processes are running.

2
Sign Out from OneDrive

Click the OneDrive cloud icon in your Mac's top menu bar. Click the gear icon to open Settings or Preferences, navigate to the Account tab, and click Sign Out.

3
Remove from macOS Internet Accounts

Open System Settings (or System Preferences on older macOS versions), go to Internet Accounts, select the problematic Microsoft account, and remove it.

4
Sign In to OneNote

Reopen OneNote and sign in using the correct Microsoft account credentials.

Sign Out of the Incorrect Account via OneDrive and macOS Settings
OneDrive Access: If clicking the OneDrive icon only opens a Finder window, ensure the actual OneDrive application is actively running from your Applications folder.
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Frequently Asked Questions

Why are my OneNote notebooks suddenly read-only on Mac?

This usually happens if your Microsoft subscription has expired, your storage is full, or OneNote is trying to authenticate a different account that lacks edit permissions. Signing out and back in with the correct account typically resolves it.

How do I back up unsynced notes in OneNote for Mac before reinstalling?

Because OneNote for Mac does not have a local backup folder like the Windows version, you must manually copy and paste unsynced sections into a separate local document (like WPS Writer or Apple Pages) or export the pages as PDFs.

Where do I find the sign-out option for OneDrive on macOS?

Click the OneDrive cloud icon in your Mac's top menu bar, select the gear icon to open Settings or Preferences, click on the Account tab, and then click the 'Sign Out' button.

Will removing the Microsoft account from macOS Internet Accounts delete my files?

No. Removing the account from System Settings only severs the authentication link for apps using that Microsoft account. Your local files and cloud-stored data remain perfectly intact.