Extract the rar file in the root RA2 folder. Then install and copy this ddraw file found here. Go to game properties and disable the Origin UI in game and also add '-win' in the command window above so the game will start in windowed mode. Head to the origin game page and find RA2. So it seems a combo of the different sulutions given here and there did seem to work with a few tweaks. I run the game on a Win 10 Pro 64bit system. So I've been going back and forth about this for days now trying to get it to work.
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