Interestingly, I have experienced the same results attempting to connect to a Windows 11 PC remotely after my router at the host end has been rebooted. This has only been going on in the last couple of months or so. After the reboot of the router (but not the PC) I cannot connect to PC for about 20-30 minutes, but then all is fine. NoMachine has the same problem, but not [censored] .