Hi @Maximilian K , this might be related to a problem with the Local Security Authority (LSA) or other configuration issues.
Try the following steps and let me know what you find:
Check event logs: Examine the event logs on the affected device for any errors or warnings related to WHFB, Azure AD, or LSA. Look for logs in the following locations:
- %SystemRoot%\System32\winevt\Logs\Microsoft-Windows-AAD%40Operational.evtx
- %SystemRoot%\System32\winevt\Logs\Microsoft-Windows-WebAuthN%40Operational.evtx
- %SystemRoot%\System32\winevt\Logs\Microsoft-Windows-HelloForBusiness%40Operational.evtx
Verify network connectivity: Ensure that the device has proper network connectivity to required endpoints, such as https://login.microsoftonline.com.
Check domain and federation settings: Make sure that the user's domain is added as a custom domain in Azure AD and that the on-premises identity provider supports WS-Trust.
Review Azure AD Connect configuration: Ensure that Azure AD Connect is properly configured and syncing user accounts and attributes between on-premises Active Directory and Azure AD.
Update and patch: Make sure that the device, Windows Server 2016 domain controllers, and other related components are up-to-date with the latest patches and updates.
If none of these work let me know and I can look into your environment!
Please let me know if you have any questions and I can help you further.
If this answer helps you please mark "Accept Answer" so other users can reference it.
Thank you,
James