It will occasionally be necessary to use a command prompt to interact with GMS. To do this you must use a command prompt with elevated administrator permissions.
To open an administrator command prompt, press the windows key or icon, and then type “cmd” on your keyboard. You will see this:
Right click the mouse on the “Command Prompt” program and choose “Run as administrator”.
You will then be prompted to confirm you wish to run the application as administrator, and after this you will be using an administrator command prompt.