Solidworks Host File Block Fix Jun 2026

You will see a file named (no extension).

Many modern antivirus and antimalware programs protect the Hosts file to prevent malicious hijacking. If your edits disappear or your antivirus flags the action, temporarily disable your antivirus software's "Host File Protection" or "Self-Defense" feature before saving your edits. Turn the security software back on immediately afterward. Proactive Network Alignment solidworks host file block fix

You will see a file named (with no file extension). Select it and click Open . Step 3: Identify and Remove the SolidWorks Blocks You will see a file named (no extension)

If you see lines matching 127.0.0.1 ://solidworks.com or similar block strings, highlight the entire line. Delete those lines completely. Click > Save . Close Notepad. Step 3: Flush Your DNS Cache Turn the security software back on immediately afterward

Select , apply it to all profiles (Domain, Private, Public), and name the rule "SolidWorks License Ports". Repeat the same process under Outbound Rules . Alternative: Resetting to a Default Host File

Select your user account and check the box for or Modify under the Microsoft Learn guide . Click Apply and OK . 2. Edit the Hosts File to Fix Blocks

Navigate to the following directory path: C:\Windows\System32\drivers\etc