Register for an account on the official Dassault Systèmes portal.

The software will ask to create an environment path (typically C:\ProgramData\DassaultSystemes\CATEnv ). Click Yes to create the directory, then click Next . Step 4: Component Selection

By choosing verified, academic, or institutional pathways, you gain access to a stable, clean version of CATIA V5 while protecting your hardware and remaining legally compliant.

Are you installing this via a or the official student edition ?

If you do not have student status, here are legitimate free alternatives to CATIA V5:

What or prompt are you seeing if the installer fails? What version of Windows are you currently running?

Follow the provided instructions to install the software, which is usually identical to the commercial version but restricted to non-commercial use.