8 Issues fixed Installing under modern Windows For many people, the version of Installshield which MechWarrior 3 uses refuses to start, and instead just hangs. This appears to be caused by conflicting programs running in the background. Singling out which program this is can be quite difficult. A simple workaround is to create a new account with administrative privileges, and install MechWarrior 3 under that. citation needed Adding compatibility for modern Windows The following methods apply to both MechWarrior 3 and the Pirate's Moon expansion pack (except for the official patch step, as none were ever released for Pirate's Moon). Method 1.
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Sep 28, 2013 - Had an old image of Mech3 on an iso image, ran the the setup file. Setup wouldnt run at first, saying MechWarrior 3 only runs in Win95/98SE,. Mechwarrior 3. Installs ok, no problems. Crashed after running the intro. Restarted, selected Instant Action, and played a couple of games without problems, although crashes if I select battle wave.