To bypass this, you cannot run setup.exe directly from the root of the DVD/ISO.
Open Command Prompt as Administrator and run: install catia v5 r21 on windows 11 fixed
Navigate to the core binary directory on your hard drive. By default, it is located at: C:\Program Files\Dassault Systemes\B21\win_b64\code\bin\ . Modify the Desktop Shortcut: To bypass this, you cannot run setup