Solidworks Host File Block Fix Jun 2026

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

Most "blocking" issues occur in two specific scenarios:

Change the file type dropdown menu in the bottom-right corner from Text Documents (*.txt) to . Double-click the file named hosts to open it. Step 3: Add the Server Configurations solidworks host file block fix

If you are using a network license within a company or university and your machine cannot find the server, you can force Windows to find it via the Hosts file. Scroll to the very bottom of the file.

: When a network cannot translate server hostnames to IP addresses, the system may need a manual override in the hosts file. Step 1: Unblock the Hosts File from Security Software Right-click on the Notepad application from the search

: Search for Notepad in the Start Menu, right-click it, and select Run as Administrator .

If the issue is related to file corruption rather than connectivity: Step 3: Add the Server Configurations If you

You did Method 1. You restarted. An hour later, the block is back. Why?

When in doubt, contact your VAR (Value Added Reseller). They have diagnostic tools that can fix this in five minutes remotely.

If you are using SolidWorks on a corporate network, ensure your Windows Defender Firewall has open inbound and outbound exceptions for ports 25734 and 25735 . These are the default communication ports used by the SolidWorks licensing service. If these ports remain closed, editing the Hosts file will not fully resolve your connectivity roadblocks.