Opening your OneNote notes should be an easy task.
Unfortunately, thats not always the case.
But if this solution doesnt work, try resetting the app and check the results.
Clear Old Credentials
Clearing your old OneNote and Office credentials is another potential solution.
On Mac, you oughta delete your OneNote password entries from Keychain.
If the error persists, reset your keychain information.
LaunchFinder, click onGo, selectUtilities, and thenKeychain Access.
Then go toPreferencesand click onReset My Default Keychain.
look to see if your new keychain solves the problem.
Reinstall OneNote
If this stubborn error refuses to go away, reinstall the app.
On Windows 10, go back toApps & Features, select OneNote, and hit theUninstallbutton.
On Mac, launchFinder, go to theApplicationsfolder, and drag OneNote to theTrash.
reboot your Windows or Mac computer and reinstall OneNote.
Launch the app and look to see if you’re able to open your notes now.
