WIN 10 built-in remote desktop problem, interested friends came to discuss the

Is the latest problem, has been my life for self-use WIN10 64 professional version (version 1909), under normal condition, I remote from the outside to the host, the remote desktop connection is normal, when I or close out from remote desktop remote, connect the host at the time, have lost connection state (hint: this computer cannot connect to the remote computer), ping the host machine is normal, connect the corresponding service also through port 3389, and then I try to restart the remote service, after the restart service also not line, the only way to temporarily solve the problem now is to restart the computer, restart the remote can normal connection again, and then, in turn, circulation, tell me the idea to solve the problem:
1. The problems caused by the network layer, I put the switch into the host LAN IP, direct network access, on the second floor problems also exist, so the problem can be ruled out
2. The problem of system security mechanisms, the firewall system at my close, try to connect is still a problem,
3. The application service problem, in the event of a problem, I look at the remote service, is normal, I Telnet service port 3389 is also normal,

Baidu solutions are tried, not solve, so this check for friends and me the same question,