It is obvious that the telnet remote connection service of the other party is not enabled. In addition, if it is enabled and the password is set, you cannot log in. You can first try whether you can ping the other party. If ping fails.Just give up the idea. Or you can use netuser the other party's IP IPC $password to empty.(The following IPC $can also be changed to C $) Look at the tips. If you are prompted that you cannot connect, give up.
Do not use the telnet command. You can directly enter " IP of the other party" in the operation. Of course, the premise is that the two machines are on the same LAN and there is no firewall