Problem:
The client cannot connect to the remote computer.
The remote connection may not be enabled or the computer is too busy to accept new connections.
The connection may also be blocked due to network problems. Try again later.
If the problem persists, contact the administrator.
Solution:
1. first, confirm that the remote login service is enabled, that is, the Remote Desktop Services (Terminal Services in Windows XP) Service: Right-click my computer-Manage-service and find the Terminal Services Service, start this service.
2. Right-click my computer-properties-remote, and select "allow users to log on to the server remotely"
You can also open it in the Registry and expand HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ contro l \ Terminal Server in sequence.
Then, find the "fdenytsconnections" key in the right column.
Double-click to change the key value to "0", click "OK", and close the registry editor.
3. view the Remote Desktop port number
View remote host accept remote connection default port can be viewed and modified from the registry or other third-party software. For example
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Terminal Server \ winstations \ RDP-TCP
Find the "portnumber" subitem and you will see the value 00000d3d, which is a hexadecimal representation of 3389. Use a hexadecimal value to modify the port number and save the new value.
4. check whether a firewall policy organizes Remote Desktop connections.
5. Check whether the port is enabled.
Netstat-
Or use Telnet.
6. restart the computer.