On my school's computers PT is blocked by an antivirus, as the teachers got annoyed with people playing. But now that the game needs no external DLLs, it can run while zipped up. Try running it while it's still zipped up.
@Dingolo(View Post) Can you access the password of an admin?can you run as admin? If it is because you are not an admin, you can take a risk... Using cmd, delete their password, go into their account,make yourself an administrator. Their password will be gone, so they will probably just think it is a glitch... maybe.