Solidworks Host File Block Fix Jun 2026

Here is the irony. In 2020 and beyond, Dassault Systèmes (SolidWorks' parent company) updated their licensing kernel. They introduced a "Self-Healing" mechanism. When SolidWorks starts, it now:

: On a new line at the bottom, type the IP Address , then a Tab space, then the Server Name . Example: 192.168.1.100 PDMServerName . solidworks host file block fix

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Open the and navigate to System and Security > Windows Defender Firewall . Click Advanced Settings on the left panel. When SolidWorks starts, it now: : On a

Right-click on the Notepad application from the search results. Select .

This method is commonly used with cracked or pirated versions of SOLIDWORKS to block communication with activation and validation servers.

Dassault Systèmes (the maker of SolidWorks) has long since moved past simple host-file checks. Here is why the "fix" fails today: