onarliog: I bet pre-CC3 games are never going to make it here simply because of technical problems. Making them reliably run on modern-day OS would require a significant overhaul of the graphics engine, it's not a matter of flipping a few compatibility flags.
timppu: Do those compatibility problems exist also on the C&C Ultimate Collection that EA is selling itself in the Origin store? At least it says minimum requirements being Windows Vista/7, not sure if that means the games have issues working on later Windows versions (8.1/10).
I have the
C&C: First Decade retail collection, not sure if it has issues running on my Windows 7 PC. I've meant to play them all through at some point (many of them I've played already before, but not recently).
You are in luck then, First Decade is the recommended version. Fan made compatibility patches target the versions that come with that disk, and after patching they have a fair chance of working on Win 7. As a result it sells for insane prices on ebay these days. Some people still encounter random glitches and crashes here and there, especially with RA2, like I said it is inherent to how the patches work. It is a terrible hack job really, but that's as good as it gets without the source code. That said, everything runs fine on my setup here. I just needed a bit of experimentation with the compatibility settings to get the color palettes and scroll speeds right, you know, the usual multi-CPU issues.
The Ultimate Collection is only good for the newer games. Earlier ones are simply broken, it is a scam.