Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi Michael,
Sorry for the issue persists.
If you don't mind to investigate further, I suggest you run Registry Editor as administrator. Then go to this path: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\Identity\Identities to check whether there are duplicated folders with same email address.
If yes, please sign out Office applications and quit them. Go to Registry Editor and delete the duplicated folder. Restart PC and try to sign in Office and check the email account in Access work or school settings.
If issue persists, may I know whether you have one admin account and one user account have the same email account? It will help us move further.
Appreciate your cooperation.
Best Regards,
Ivy