Unity 4 and 5 offline web player problem

I am creating an application that needs to be run on computers without internet connection. Platform - Web Player. Of course, during the build, i click on "offline deployment". On the target PC I install a web player from this archive: http://webplayer.unity3d.com/download_webplayer-3.x/UnityWebPlayer.cab However, after running the application in a browser, i have an error - "Failed to update web player" and nothing is downloaded. The computer is not connected to the Internet, and there's nothing you can do about it. The problem occurs both in the 4 and 5 versions of Unity. Please, help.