Office for Mac Issues

Fix OneNote on Mac Repeatedly Asking for Keychain Access

Emma BrownEmma Brown Oct 20, 2026 869 views

Question details

The user needs to stop OneNote for Mac from continuously prompting for a keychain sign-in password even after selecting the 'Always Allow' option.

How to Fix OneNote on Mac Repeatedly Asking for Keychain Access
Product
Microsoft OneNote for Mac
Device & OS
macOS
Scenario
Attempting to use, open, or sync notebooks in OneNote on a Mac device while logged into a Microsoft account.
Observed behavior
OneNote repeatedly requests sign-in or keychain access because macOS cannot correctly read or verify the stored Microsoft Office credentials.
Before you start

Ensure you know your Microsoft account email and password, as you will need to sign back into OneNote after clearing your stored keychain credentials.

Solution 1Recommended

Remove Stored Microsoft Office Credentials in Keychain Access

Deleting corrupted or outdated keychain entries forces macOS to generate fresh, working credentials for OneNote.

Often, the keychain permissions for Microsoft Office become damaged. Manually removing these saved passwords allows OneNote to request new, uncorrupted permissions upon your next login.

1
Quit Microsoft Office Applications

Close OneNote and completely exit any other open Microsoft Office applications (such as Word or Excel) on your Mac.

2
Open Keychain Access

Open 'Finder', navigate to 'Applications', open the 'Utilities' folder, and double-click 'Keychain Access' to launch the application.

3
Search for Office Credentials

In the search bar at the top right of the Keychain Access window, type 'Microsoft Office' to filter your saved login items.

4
Delete Corrupted Entries

Select all the search results related to Microsoft Office, right-click (or Control-click) on them, and choose 'Delete'. Confirm the deletion if prompted.

5
Restart and Sign In

Restart your Mac, open OneNote, and sign in again with your Microsoft account to establish new keychain permissions.

Remove Stored Microsoft Office Credentials in Keychain Access
Additional Verification: If the issue persists, check if other Microsoft Office applications are also repeatedly requesting keychain access, which may indicate a wider Office installation issue.
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Frequently Asked Questions

Why does OneNote keep asking for my keychain password on Mac?

This typically occurs when macOS Keychain Access has damaged, corrupted, or outdated permissions for your Microsoft Office credentials, preventing OneNote from authenticating silently in the background.

What does 'Always Allow' do in the Mac keychain prompt?

Clicking 'Always Allow' is supposed to grant an application permanent permission to access that specific keychain item without asking again. However, if the stored password token is broken, the prompt will continue to appear because the app fails to read valid data.

Will deleting Microsoft Office from Keychain Access delete my notes?

No. Deleting keychain entries only removes your stored login credentials on that specific Mac. Your actual notes are safely stored in your Microsoft OneDrive account. You will just need to sign in again to access them.

How do I check my OneNote version on Mac?

Open the OneNote application, click on 'OneNote' in the top menu bar (next to the Apple logo), and select 'About OneNote'. A dialog box will display your current version number and license information.