J JWRockman Honorable Jan 11, 2014 2 0 10,510 Jan 11, 2014 #1 I have installed Call of Duty 2 with original disks and key. Trying to install COD United Offensive but error comes up and says can't validate COD2 installation. What can I do to fix this and install COD UO?
I have installed Call of Duty 2 with original disks and key. Trying to install COD United Offensive but error comes up and says can't validate COD2 installation. What can I do to fix this and install COD UO?
IRONBATMAN Honorable Aug 30, 2013 3,359 0 13,460 Jan 11, 2014 #2 Try running it in compatibility mode Upvote 0 Downvote