The legacy of for Age of Empires II: The Conquerors
Multiplayer says "Incorrect version."
The No-CD patch was a modified age2_x1.exe (the main game executable for The Conquerors ) that had been hex-edited or reverse-engineered to bypass CD-checking routines. Typically sourced from warez sites, game utility forums (like GameCopyWorld or MegaGames), or fan communities, it replaced the original 1.0c executable.
If you are struggling with resolution issues on modern 4K monitors, many players recommend the UserPatch , which sits on top of v1.0c. It adds , increases frame rates from 20fps to 60fps, and often includes its own No-CD functionality.