Solidworks Host File Block Fix Page

How to Configure the Local HOSTS file to Resolve Server Name

The "invisible wall" was gone. Elias leaned back, the hum of the lights no longer sounding like a mockery, but a celebration. He had defeated the block, and the prototype was back on track.

: Adding entries to the hosts file "unblocks" communication by telling your PC exactly where to look for the license server when the network fails to do so. Blocking (Cracked Software) : In unofficial versions, users often add entries like 127.0.0.1 activation.solidworks.com solidworks host file block fix

How to Configure the Local HOSTS file to Resolve Server Name

Windows protects the Hosts file by default. You must be an administrator to modify it. How to Configure the Local HOSTS file to

If you are a SolidWorks user, particularly in a corporate or network licensing environment, you may have encountered the dreaded license activation error. Often, this error isn't caused by a wrong serial number, but by a misconfigured Windows that blocks communication with Dassault Systèmes' activation servers.

The Hosts file blocks DNS, but some SolidWorks processes bypass it by using hard-coded IP addresses. You must also block the executable in the firewall. : Adding entries to the hosts file "unblocks"

This fix is almost exclusively used when SolidWorks cannot find the license server, even though the server is running and other computers can connect. This often happens due to:

: If the host file is correct but you still can't connect, ensure TCP ports 25734 and 25735 are open in your Windows Firewall for the SolidNetWork License (SNL) Manager .