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Windows Server 2025: Fix black or blue screen after RDP login

Description​

Connecting to your Windows Server 2025 via Remote Desktop Client for the first time works fine but then it stops working properly. After logging in, you might just see a black screen or the blue default background without any icons or taskbar.

After restarting your server, it works again for one connection.

Solution​

In order to solve the issue, first restart your server one more time to be able to login to your server via Remote Desktop Client. Alternatively, you can use the VNC console to locally sign in to your server.

Then open a PowerShell command line and run the following command:

Set-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" -Name "SelectNetworkDetect" -Type DWord -Value 3