RDP error: This computer can’t connect to the remote computer

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In this opportunity we will share you about RDP error. Let’s try to find out how to fix the RDP error that occurs when you try to connect to a remote computer or RDS server by using the RDP client. If you get that problem, a window with the following message RDP error appears: “This computer can’t connect to the remote computer. Try connecting again. If the problem continues, contact the owner of the remote computer or your network administrator”. That RDP error occurs because you may have a Port assignment conflict, a Certificate Corruption and an incorrectly configured Authentication and Encryption setting.

First of all, the things which should you do is check whether the remote computer is accessible through the network and the Remote Desktop port (TCP 3389) is responding. You can check port availability by using Telnet client, PowerShell 4.0 and higher and PowerShell all versions. If port 3389 is unavailable, you have to check that Remote Connections is enabled on the remote server. Please right click on Start button -> System -> Remote settings -> Allow remote connections to this computer.

In a case, when you checked that Remote Desktop is enabled and you might to connect, it is always failed. Why this problem can happen? Well, we will explain about it. In this case, maybe you have the problem that binding with the RDP Tcp connector. Well, you may have a binding problem with the RDP-Tcp connector. This is usually occurs with servers which have two or more NICs. To fix that problem, you can try the methods in the text below.

  1. Please Log on to the server locally.
  2. Then click “Start”and “Run”, please type “tscc.msc /s” and click OK.
  3. Afterwards in the Terminal Services Configuration snap-in double-click Connections, then “RDP-Tcp”in the right pane.
  4. Then you can click the “Network Adapter”and select the correct network adapter. Click OK.
  5. After that see whether you can establish an RDP connection to the server. There is no need for a restart because the change takes effect immediately.

Actually, there is another cause why the RDP error can occur. It may be caused by a high level of security which is not supported by the old versions of the RDP client. In this case, on RDP-Tcp Properties dialog box, open General tab. Then change Security layer from default “Negotiate” to “RDP Security Layer”. To specify RDP security level, it can use the policy which called name “Require user of specific security layer for remote (RDP) connections”. You can enable that policy and then select “RDP Security level” in dropdown. The maximum number of RDP connection can be specified in section “Connections” by using the policy Limit number of connections. You can set unlimited connection by specify 999999 in the option “RD Maximum Connections allowed”. Now, go back to your client PC. Then try to start new RDP Session. We hope the connection should be established successfully.

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