Kicked from server

[BlindShot (DayZ) 0]

So i let my friend play dayz on my acc(steam acc) and he installed and i let him play the game until he bought it so we both wanted to play together on a server and so he joins a server and when i join i get kicked and if he joins me he get's kicked and it says in the server something about illegal copies when we both bought it. Please help so we both can play the game

[AmberHelios 2071]

did you remove your game off his pc before playing if you didnt youre cd key is still in the reg if he got it from steam he needs to run both games as admin to the main screens to replace your keys with his

[BlindShot (DayZ) 0]

how do you run it with admin

[AmberHelios 2071]

right click on steam and run as administrator if you verify the game files before launching the games this will remove the keys upon verifying the files then put them back in when starting the game