Solidworks Host File Block Install __full__ Jun 2026

Follow these steps to edit your hosts file. You must have Administrator privileges. Step 1: Open Notepad as Administrator Click Start and type Notepad .

The Windows hosts file is a local text file that maps hostnames to IP addresses. It acts as a local phone book, overriding external Domain Name System (DNS) servers.

Block the domains at the DNS resolver level for the entire network.

To resolve installation blocks, you must audit and clean your Windows hosts file. Follow these precise steps using administrative privileges. Step 1: Open Notepad as an Administrator Press the . 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 > Open . solidworks host file block install

This priority gives you, the user, absolute control over name resolution for your machine. By adding a specific entry, you can tell your computer to look for the domain of a license server at a completely different address—such as your own loopback address ( 127.0.0.1 ). In the context of activation blocking, you are essentially tricking your computer into thinking the activation server is your own local machine, which doesn't know how to respond, thereby effectively "blocking" the connection.

Add the following lines to your hosts file:

For network installations, ensure that the SolidWorks SolidNetWork License (SNL) Manager is properly configured. If the client machine cannot reach the host server, use the command prompt to ping the server name or IP address directly to verify network visibility. Clean Installation Environment Follow these steps to edit your hosts file

If you own a valid, perpetual SolidWorks license and wish to keep the installation permanently offline:

: Many antivirus programs (such as Webroot, ZoneAlarm, or SentinelOne) actively "lock" the hosts file to prevent malware from hijacking it.

Open the and navigate to System and Security > Windows Defender Firewall . The Windows hosts file is a local text

The hosts file is a protected system asset. You cannot save changes to it without administrative privileges. 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

Inside Notepad, click in the top menu, then select Open .

Type the following command and press Enter: ipconfig /flushdns Alternative: Protecting the Hosts File from Changes

Error messages stating: "Could not connect to the activation server." Licensing errors during the final stages of installation.

If you configure this file to point a specific SOLIDWORKS web domain to a dummy or local IP address, the computer will attempt to route the traffic there instead of connecting over the live internet. This method is highly useful for: