Essentially, you are telling your computer: "When SolidWorks tries to phone home to verify its license, don't let it leave this machine."
I can provide specific firewall rules or script deployment solutions based on your environment. Share public link
When your hosts file blocks the activation servers, SolidWorks cannot verify your serial number. You will typically experience the following system behaviors: Solidworks Host File Block
Navigate to the following path: C:\Windows\System32\drivers\etc
Some IT administrators block telemetry or "phoning home" for privacy reasons. However, Dassault has become aggressive. If their servers cannot reach your installation, they may flag your license key as "inactive" or "hijacked," leading to a support nightmare. Always allow SolidWorks through your firewall. Essentially, you are telling your computer: "When SolidWorks
What or code is appearing on your screen?
What displays when the software fails? Are you using any corporate VPNs or third-party firewalls ? However, Dassault has become aggressive
Fixing SolidWorks Activation Errors: The Complete Guide to the Host File Block
Type ipconfig /flushdns and press to force Windows to recognize the new entry. Common Troubleshooting Scenarios
The hosts file is located at: C:\Windows\System32\drivers\etc\hosts 2. Open Notepad as Administrator Click the Start menu and type . Right-click Notepad and select Run as administrator . In Notepad, go to File > Open . Navigate to C:\Windows\System32\drivers\etc .