In corporate environments using , the software constantly "phones home" to the local license server. Sometimes, Windows Update or DNS changes cause SolidWorks to look for activation servers online rather than the local server. Blocking external Dassault URLs forces the software to stop searching the internet and listen to the local network license manager.
For a visual walkthrough on how to safely edit these system files to block or map addresses, watch this guide: Solidworks Host File Block
SolidWorks Host File Block: Causes, Fixes, and Troubleshooting In corporate environments using , the software constantly
It is a common misconception that unlicensed use can remain hidden. SolidWorks files (e.g., .sldprt or .sldasm ) contain invisible digital markers. When a computer with a pirated copy connects to the internet, the software can transmit identifying information such as IP addresses and MAC addresses back to Dassault Systèmes. This data can be used to initiate an audit or legal proceeding. For a visual walkthrough on how to safely
Legitimate users get security patches. If you block the host file, you block those patches. Vulnerabilities in older versions of SolidWorks have been used as entry points for corporate espionage.