Adding User Via Windows Command Line

Adding users Windows

Step 1 - Add User

net user 'username' 'password' /add

C:\WINDOWS\system32>net user thunder password /add 

Step 2 - Add the new User to Remote Desktop Group

net localgroup "Remote Desktop users" 'username' /add

C:\WINDOWS\system32>net localgroup "Remote Desktop users" thunder /add

Step 3 - Adding new user to Administrator group

net localgroup Administrators 'username' /add

C:\WINDOWS\system32>net localgroup Administrators thunder /add

All the above steps in a Single Command

C:\WINDOWS\system32>net user thunder password /add && net localgroup "Remote Desktop users" thunder /add && net localgroup Administrators thunder /add

Note : Make sure you have administrator privileges.
In case of an error, there is a possibility of Password Complexity set on the Remote Machine, try a complex password.

Enable Remote Desktop Protocol Services

C:\WINDOWS\system32>reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server" /v fDenyTSConnections /t REG_DWORD /d 0 /f

Add Firewall Rule in Windows to Allow Remote Desktop Connection

C:\WINDOWS\system32>netsh advfirewall firewall add rule name="Open Port 3389" dir=in action=allow protocol=TCP localport=3389