While my problem with Starforce came from installing Bet On Soldier, the problem is common to many SF protected titles, and the fix is designed to work with all their products, so I thought this would be the best place to put it for people to find. I originally posted this on the AS Forum I installed the game, correctly entered the CD Key, but when I tried to run the game SF came up with an error stating that the EXE file had been modified and had been corrupted or infected with a virus, please try reinstalling the software. I re-installed only to get the same message. I tried patching the game before running it and still no luck. I looked on SF Forums and found several similar threads for other games (X3 Reunion, Virtual Skipper, and a few others). The reason I am posting this here is because the problem is to do with SF verifying the disc, and the fix can be used on all SF protected products. The fix is from the SF forums, so isn't illegal or bypassing SF. I have tried it on BOS and found that it worked, so maybe someone here will find it useful. It is designed to fix the problem that after installing the game, and entering the CD Key the game fails to start claiming UFO.EXE has been modified and is corrupted or infected with a virus. I'll run through that in plain English specifically for Aftershock. 1) Copy UFO.EXE to your desktop, so you have a backup in case everything goes wrong. Not sure why this step is necessary, since the original file doesn't work 2) You will need to download UpdateModule.exe from the StarForce website - click this link http://help.starforce.ru/tmp/UpdateModule.zip Unzip the file and copy it into the UFO Aftershock main directory. 3) If you just run the UpdateModule.exe file a screen will flash up for half a second and disappear, but does nothing. You need to change the command line of it to make it work. Click Start ---> Accessories ---> Command Prompt Type "cd\" then hit Enter (Don't type the "") Type "cd Games\UFO Aftershock" then hit Enter (replace Games\UFO Aftershock with the location you installed AS onto your machine). Type "UpdateModule UFO.exe UFONew.exe" then hit Enter The Update module file will run, and should display a message that it has worked. 4) Looking in the UFO Aftershock directory you will now have UFO.EXE (the old file that SF claims is corrupted) and a file called UFONew.exe. Delete the old file, and rename the new file UFO.EXE. 5) Run the game as you would normally. Hopefully that will fix the problem. The original source for this fix is here - it shows a picture of the Command Prompt if you need to check what you are doing is correct.