when attempting outlook profile setup to local Exchange Server , Prompted for Microsoft login

When setting new profile to outlook 2019/2016 microsoft login pop-up

To solve this, you need to create new registry key :

HKEY_CURRENT_USER\SOFTWARE\Microsoft\office\16.0\outlook\autodiscover
DWORD: ExcludeExplicitO365Endpoint
Value = 1
HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\office\16.0\outlook\autodiscover
DWORD: ExcludeExplicitO365Endpoint
Value = 1