question

ngeorgopoulos avatar image
0 Votes"
ngeorgopoulos asked ngeorgopoulos published

Remote Desktop Client not connecting to some Windows 10 Pro workstations through VPN

Hi, I cannot establish Remote Desktop Connection from my home computer to my work computer (Windows 10 Education Ver. 21H2 19044.1682) through VPN. RDC hangs through the establishing connection - negotiation phase before asking for any user credentials-authentication and after 90 seconds approximately times out with a general error that the computer is not responding etc.  
Before you suggest me obvious solutions and troubleshooting guides let me further point out what I have already found out:

  • VPN has been configured correctly because I can RDC to many other work computers without any problem and I can ping my work computer without any packet loss. Same problem appears in 7 (Win 10 Professional) out of 30 workstations of my organization. I can successfully connect from my home computer to the other 23 workstations using the exact same VPN settings and without any change to Mikrotik Router config. So I suppose that the problem is not VPN by itself but it involves specific PC - RDC configuration.    

  • Remote Desktop Connection to my work computer works correctly from another work computer (inside my organization's LAN). Having successfully established a RDC to my work computer inside our LAN proves to me that the problem is more complex and it specifically involves RDC through VPN to Workstations with some specific configuration. 

  • Trying to locate the specific RDC affecting configuration I have followed step by step the General Remote Desktop connection troubleshooting  without any luck

  • I have deactivated Windows local firewall and defender without any luck.

  • I have temporarily allowed all traffic to go through my VPN without any luck.  

  • When I am trying to RDC to my work computer through VPN I am getting the same errors in the Event Viewer again and again. The events that I am getting on Microsoft-Windows-RemoteDesktopServices-RdpCoreTS/Operational are attached below (Google Translated from Greek) but I want to specifically point out the following which are related to RemoteFX module: 

a. TCP socket READ operation failed 1236
b. TCP socket WRITE operation failed 1236
c. The disconnect reason is 4410

  • I have Googled the above errors but did not find anything helpful to solve the above mentioned problem. Disconnect reason 4410 is not mentioned at all in RDS Session Host Server Disconnect Codes

    Level Date and time Source Event ID Task category
    Information 27/4/2022 2:43:18 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 103 RemoteFX Module The reason for disconnection is 4410
    Information 27/4/2022 2:43:18 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 148 RemoteFX Module The rdplic channel is closed between the server and the client in the transfer channel: 0.
    Information 27/4/2022 2:43:18 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 148 RemoteFX Module The rdpcmd channel is closed between the server and the client in the transfer channel: 0.
    Information 27/4/2022 2:43:18 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 148 RemoteFX Module The rdpinpt channel is closed between the server and the client in the transfer channel: 0.
    4/27/2022 2:43:18 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 145 RemoteFX Module During this connection, the server did not send data or graphics updates for 0 seconds (Inactivity 1: 0, Inactivity 2 : 0).
    4/27/2022 2:43:18 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 102 RemoteFX Module The server terminated the main RDP connection to the client computer.
    Information 27/4/2022 2:43:18 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 72 RemoteFX Module Interface Method Called: OnDisconnected
    Warning 4/27/2022 2:43:18 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 143 RemoteFX Module The WRITE function of the TCP socket failed, error 1236
    Warning 4/27/2022 2:43:18 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 142 RemoteFX Module The TCP socket READ function failed, error 1236
    Information 27/4/2022 2:41:48 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 141 RemoteFX Module PerfCounter session started with presence ID 2
    Information 27/4/2022 2:41:48 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 72 RemoteFX Module Interface Method Called: SendPolicyData
    Information 27/4/2022 2:41:48 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 72 RemoteFX Module Interface Method Called: PrepareForAccept
    4/27/2022 2:41:48 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 65 RemoteFX Module The RDP-tcp # 2 connection was established
    4/27/2022 2:41:48 PM Microsoft-Windows-RemoteDesktopServices-RdpCoreTS 131 RemoteFX Module The server accepted a new TCP connection from client 172.16.0.239:1054.

Any help would be greatly appreciated.
Thank you in advance
Regards, Nikos
















remote-desktop-client
5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

0 Answers