Outlook 2019 keeps asking for password – Triggered when signing in to Office Account or adding another account

Resolved By

1) With MS Office closed, open the registry (run regedit for example) and navigate to the following path:

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Autodiscover

2) Add a new DWORD value named: ExcludeExplicitO365Endpoint and set its Data value to 1

By Creating the Above registry and the issue got resolved

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