Block Fix | Solidworks Host File

Reset Winsock (Command Prompt as admin): netsh winsock reset then restart.

Confirm system time and date are correct.

Temporarily disable VPN and retry activation.

If using SolidNetWork License Manager, ensure the client points to the correct license server hostname/IP and that that server is reachable (ping/tracert).

Restart your computer. SolidWorks should now look at your local machine for validation instead of the internet.

"Cannot connect to license server system. The license server has been modified." solidworks host file block fix