Hi @Johannes Ebner , you can check the following group policy settings to confirm the behavior:
- Type gpedit.msc into Run box, Enter.
- Navigate to the following group policy object: Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options
- Find the entry "Interactive logon: Don't display last signed-in" and "Interactive logon: Don't display username at sign in" in the right pane.
- configure them as "Disabled".
Besides that, you can also confirm the following group policy is not configured:
- Type gpedit.msc into Run box, Enter.
- Navigate to the following group policy object: Computer Configuration\Administrative Templates\System\Logon
- Find the entry "Block user from showing account details on sign-in" and "Do not enumerate connected users on domain-joined computer" and "Enumerate local users on domain-joined computers" in the right pane.
- Configure "Block user from showing account details on sign-in" and "Do not enumerate connected users on domain-joined computer" as "Not configured" or "Disabled".