"Error 6" in the SolidWorks 2017 SSQ activator typically indicates a communication or permission failure between the activation script and the Windows registry or the licensing service. It often occurs when the script cannot write the necessary serial numbers or "handshake" files to your system. Common Solutions for Error 6
Official Microsoft Program Install and Uninstall troubleshooter to clean up old installation data. Troubleshooting the Official Way Solidworks.2017.activator-ssq Error 6
If you have followed all steps (disabled AV, ran as admin, extracted files, reset permissions) and Error 6 persists, consider these less common scenarios: "Error 6" in the SolidWorks 2017 SSQ activator
Download the "All-in-One" Visual C++ Redistributable Runtimes pack (from a trusted source like MajorGeeks or Microsoft directly) or manually install: Troubleshooting the Official Way What If Nothing Works