Look for any lines containing the word solidworks . They will typically look like this: 127.0.0.1 ://solidworks.com 127.0.0.1 ://solidworks.com 0.0.0.0 ://solidworks.com
Double-click the file named (it will not have a file extension). Step 3: Remove SolidWorks Blocks Scroll to the bottom of the document.
: Navigate to Advanced Settings and uncheck "Lock Hosts File". solidworks host file block fix
Uncheck the attribute at the bottom of the General tab and click Apply . Step 3: Manually Edit the Hosts File for Server Connection
: After saving, open the Command Prompt and type ipconfig /flushdns to clear old resolution data. Related Fixes for Common SOLIDWORKS Blocks Look for any lines containing the word solidworks
If the host file fix did not resolve your issue, consider these alternative solutions:
: Windows spending minutes attempting to resolve an unreachable or blocked licensing domain before finally timing out. Step-by-Step Guide to Fix the SolidWorks Hosts File : Navigate to Advanced Settings and uncheck "Lock
After making the changes, restart SolidWorks and verify that it launches successfully and connects to the license server.
Modifying system files requires administrative privileges. Follow these exact steps to clear out problematic blocks safely. Step 1: Open Notepad as an Administrator
The Windows Firewall can block the SolidWorks executable or the FlexNet licensing service ports.
If your SolidWorks software suddenly refuses to launch or displays activation errors, a misconfigured Windows hosts file might be the culprit. SolidWorks relies on stable communication with licensing servers to validate your software. When this communication breaks down—often due to unintended blocks or leftover configurations from network migrations—the software fails to open.