OneNote for Mac Hangs after Sync Error

When a Sync Error occurs after opening Microsoft Office 2016's OneNote application, follow the steps below to resolve the error.

Sync Error from OneNote Application

  1. Do not click Sign In.  From the OneNote menu, select OneNote->Sign In.

    OneNote Sign In
  2. Sign in with your account; click Next.

    Sign in with account
  3. Select Work or school account.

    Work or school account
  4. Log into CAS; complete your multi-factor authentication using Duo.

  5. The Sync Error message will disappear, and syncing should be successful.

    Syncing successful