Windows 7/8/10 (64-bit) are typically used for this specific version. Installation and "Wanlyo" Context
CATIA-P2-V5R21-GA-WIN64-WANLYO refers to a specific distribution of catia-p2-v5r21-ga-win64-wanlyo-
: The UI feels dated compared to modern 3D software. Final Verdict Windows 7/8/10 (64-bit) are typically used for this