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This applies to devices that are not members of the Active Directory domain of the FSU like computers in IAP.
Solution
A change to the Outlook products implemented by the manufacturer is responsible for this.
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- Open the registry editor by typing "regedit.exe" in the start menu.
- Navigate to the following path: HKEY_CURRENT_USER\SOFTWARE\Microsoft\office\16.0\outlook\autodiscover
- Create the following value:
- DWORD: ExcludeExplicitO365Endpoint
- Value = 1
- Restart computer for changes to take effect.
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Login-Probleme mit Outlook 2016 / 2019 und Office 365
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