During the original PC release, Capcom provided two separate executables to support different rendering technologies:
Modern Windows operating systems (Windows 10 and 11) do not come with legacy DirectX 9 files pre-installed. re5dx9.exe
⚠️ A trojan named re5dx9.exe has been observed in some low-impact coin miner campaigns – it sits in %AppData%\Roaming and runs at startup. During the original PC release, Capcom provided two