Remote Desktop Connection from Windows 11 to Windows server 2003 error 0x4

Question

Hi, I can't connect via RDP to a Windows Server 2003 R2 ver. 5.2 R2 (build 3790.srv03_sp2_qfe.150316-2035) using clients Windows 11 22H2 (build 22621.1344), while the connection works fine with clients windows 10 or early.

• firewall is disabled both sides (client and server);
• applied this registry key to client windows 11: HKEY_LOCAL_MACHINE \ SOFTWARE \ Policies \ Microsoft \ Windows NT \ Terminal Services \ Client - created new dword32 ***"***fClientDisableUDP" and set to 1, reboot

I get always "Internal error" error code 0x4, extended error code 0x0.

I hope someone can help me, thank you very much.

Marco

Answer 1

Maybe this can help, but I don't have the solution

[https://learn.microsoft.com/en-us/answers/questions/1179931/rdp-from-windows-11-to-old-windows-home-server-(ba?page=1&orderby=Helpful&comment=answer-1176362#newest-answer-comment](https://learn.microsoft.com/en-us/answers/questions/1179931/rdp-from-windows-11-to-old-windows-home-server-(ba?page=1&orderby=Helpful&comment=answer-1176362#newest-answer-comment)

Answer 2

After deleting Crypto provider software (CryptoPRO in my case) the issue with Err 0x04 has gone. Maybe this solution will be helpful for someone.