Not all patches are created equal. The is specifically revered because it corresponded with the most stable, widely-used version of the original game. If you went to an internet cafe or a LAN party between 2002 and 2015, the computers were almost certainly running The Conquerors version 1.0c—with the No-CD executable applied.
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Tools like AoE2Tools can convert digital versions (like the 2013 HD Edition) into the original 1.0c format, which eliminates the need for physical media. Where to Find Files Official and community-maintained patches can be found at: age of empires 2 the conquerors no cd patch 10c