I thought you might be interested in looking at Reinforcements DVD not compatible with Windows 8.1........Buy Steam version only!.
https://forums.bohemia.net/forums/topic/174757-reinforcements-dvd-not-compatible-with-windows-81buy-steam-version-only/?do=findComment&comment=2737032
× Pasted as rich text. Restore formatting
Only 75 emoji are allowed.
× Your link has been automatically embedded. Display as a link instead
× Your previous content has been restored. Clear editor
× You cannot paste images directly. Upload or insert images from URL.