Hi! What happens when you try to copy or extract the files from the launcher.zip? Do you get an error dialog? Or do the files just magically disappear? In either case, you probably need to disable your antivirus which is either preventing the copy, or is quarantining the files after you extract them. Check the solutions discussion for more information along those lines.
Hi again! Try running your extraction program (Winzip, 7-zip, etc.) as an Admin. In general, you should run the Installation and Phoenix tools as an Admin to get around permission problems like the one you are having.
You might also find this link helpful: https://answers.microsoft.com/en-us/windows/forum/windows_10-security-winpc/cannot-zip-a-folder-access-denied-windows-10/cf6a3c7c-65e4-4ec3-970e-d0526e86637a
If none of that works just make a new root directory called games and install the whole game there. Sometimes windows doesn't want to let you modify things under the Program Files directory structure.