This is a discussion on Virus found within the General Chat forums, part of the Knight Online (ko4life.com) category; KO didnt run, giving me some error, so i redownloaded it and guess what popped up during install
Im no ...
That is a prompt for you to send the file to Avast (or whoever makes your anti-virus) and get them to confirm whether the file does contain a virus or not.
Chances are it doesn't, but that it has some similar characteristics, so it's been flagged. This is called a false-positive.
Of course if they do say it contains a virus of some kind, you should get on the phone to K2.