: Right-click setup.exe or sldim.exe and select Run as Administrator . 2. Clear Residual SOLIDWORKS Files

If the standard Installation Manager continues to fail, you can bypass it by using the Windows Installer directly.

Understanding why the error occurs is the first step toward a permanent fix:

Ensure the license server variable (e.g., 25734@localhost ) is correctly pointing to your local server if using a floating license.

For specific "SolidSquad" errors, manual environment variables may be required: Open > Advanced > Environment Variables .

: Tools like Bulk Crap Uninstaller can help remove all traces of Dassault Systèmes and SolidWorks from the registry.

: Use the Microsoft Program Install and Uninstall Troubleshooter to find and remove unlisted SolidWorks components. 3. Unblock Installation Files

If the Installation Manager screen is blank or stalls with Error 6: Navigate to your installation folder.

Find any .html or .exe files (specifically in the sldim sub-folder).