I’m writing to inform you that I’ve been experiencing the same issue described below for the past three months, which has been preventing me from properly using OneNote. Every time I attempt to log in, the same error occurs. Is there a way to resolve this issue?
Here is the error message I’m receiving:
AADSTS50020: User account '******@*****.com' from identity provider 'live.com' does not exist in tenant '*** Co.Ltd' and cannot access the application '00000003-0000-0ff1-ce00-000000000000'(Office 365 SharePoint Online) in that tenant. The account needs to be added as an external user in the tenant first. Sign out and sign in again with a different Azure Active Directory user account.
Moved from Microsoft 365 and Office / OneNote / Unknown / Windows