Had a user getting prompted by Outlook to enter credentials for another email account. There were no additional accounts attached to her outlook. I ended up using Microsoft’s Credential Manager and deleting out all the entries. This time when Outlook opened it was asking to log into a different account that the user once had linked to her email account. I quit Outlook and went back to the credential Manager and deleted out a new entry. Restarted Outlook and the issue was solved.

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