why RDP doen not active, i think there is a problem with Lab, it suppose to work fine
The instructions are to find the IP of the Windows server (using ipconfig) and to use that IP address. You are typing “the IP address of the Windows server” which is not an IP address and will not work.
For example, in my current lab the IP address of my windows server is 10.91.1.179:
So I would use that IP address in Remmina. The IP will change every time to run the lab, so don’t try to use 10.91.1.179 in your lab. Find the IP as instructed in the lab using ipconfig.