Sync error – Need password to sync (0xE0000021)

If you can’t sync your notebook because your password is needed, here are a few things to try:

Make sure you have the latest version of OneNote installed from the Mac App Store.

  1. Choose Apple menu > Software Update…

  2. The App Store opens and will display any updates for OS X or Mac App Store apps.

  3. Look for OneNote for Mac in the list of updates, and click Update.

Reset your keychain in Mac OS X

  1. In your Finder, click Go > Utilities > Keychain Access.

  2. From the Keychain Access menu, choose Preferences.

  3. Click General > Reset My Default Keychain.

  4. Sign in to your Mac OS X account.

  5. Quit Keychain Access and restart your computer.

  6. Open OneNote and try syncing your notebook. If prompted, enter your Microsoft account name and password.

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