Windows 11 scales UI elements poorly for legacy applications on 4K or 2K screens. Ensure the High DPI scaling override mentioned in Step 3 is set to System (Enhanced) .

Are you installing from an or an ISO file ?

Choose the directory where you want to install CATIA (by default, this will be C:\Program Files\Dassault Systemes\B21 ). Click Next .

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Leave the default values as they are and proceed.

Provide a troubleshooting guide for specific that commonly appear during older CAD software installations.

Toggle to Off until the installation is complete. B. Extract the Installation Media

You need two things:

: Locate Setup.exe in the extracted folder, right-click, and select "Run as Administrator" .

: Unzip all installation packages into a single folder to ensure the installer can find all components. Run Setup as Administrator : Navigate to the ) folder, right-click , and select Run as Administrator Choose Components

Set the value to match your server's details: SERVERNAME:PORT (e.g., LicenseServer01:4080 ). Step 4: Post-Install Tweaks for Windows 11 Stability

Once completed, uncheck the box that says "Launch CATIA V5 R21 now" and click . Step 3: Setting Up Post-Installation Compatibility