Solidworks Host File Block Fix -

Disclaimer: This guide is intended for resolving issues on legally licensed installations of SolidWorks. Modifying the hosts file to bypass licensing mechanisms is against the terms of service.

By default, Notepad only looks for text files. Click the dropdown menu in the bottom-right corner of the Open dialog box (above the Open button) and change it from to All Files ( . ) .

If editing the Hosts file does not fully resolve the license block, your system security settings or residual system data may still be interfering with the activation check. 1. Configure Windows Defender Firewall

Fixing this issue requires modifying the Windows Hosts file to remove the blocking rules. Because this is a protected system file, you must use administrative privileges. Step 1: Open Notepad as an Administrator Click the Windows menu. Type Notepad into the search bar. Right-click on Notepad and select Run as administrator . Step 2: Locate the Hosts File In Notepad, click File in the top menu and select Open . solidworks host file block fix

If you are unsure which lines to delete, you can rename the current file and let Windows create a fresh one:

The SolidWorks host file block fix is a solution to resolve issues related to SolidWorks being blocked by the Windows host file. This report provides a step-by-step guide on how to fix the issue.

Use the official, low-cost options available, or explore free alternatives like FreeCAD, Onshape (free tier), or Fusion 360 for personal use. Disclaimer: This guide is intended for resolving issues

You should see a confirmation message stating: "Successfully flushed the DNS Resolver Cache." Close the Command Prompt. Troubleshooting Persistent Licensing Issues

Alternatively, open Notepad, select File > Open, and navigate to the folder above.

Use the Help > Licenses > Activate... feature to refresh your license status. If you'd like, I can: Help you find the exact IP address of your license server. Provide steps to reinstall the FlexNet licensing service . Click the dropdown menu in the bottom-right corner

SolidWorks Host File Block Fix: A Comprehensive Guide to Resolving License Server Issues

Scroll to the bottom of the document. Standard Windows hosts files typically end with a few commented lines starting with the # symbol.

Network licenses require constant communication with a local or cloud-based license server manager.

Did this issue start after a recent , antivirus installation , or network change ?

Look for any lines containing solidworks or dassaultsystemes . those lines entirely. 4. Save and Exit Go to File > Save . Close Notepad. 5. Flush Your DNS Cache