Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
First, please feel free to check out the AI answer
To narrow this down, could you please confirm:
- Is the account supplied and managed by your employer or school, or is it a personal account such as Outlook.com or Hotmail?
- What is the exact message displayed when you try to sign in? Please include any error code, but remove personal information.
- Can you still open and read the affected notebook in OneNote on your iPad or another device, even if it is not syncing?
If the notebook is still open anywhere, please do not sign out, close it, reset OneNote, clear the app data, or uninstall the app while this is being investigated.