Solidworks Host File Block Install [better]

The hosts file is a system file used to map hostnames to IP addresses. It can be used to block or redirect access to specific websites or servers. In this write-up, we will explore how to block the installation of SolidWorks by modifying the hosts file.

Sometimes Windows blocks the installation media itself, leading to a blank Installation Manager screen.

Change the file type dropdown (bottom right) from "Text Documents ( .txt)" to **"All Files ( .*)"**. Select the file and click Open . 4. Edit and Block SOLIDWORKS Sites

127.0.0.1 localhost ::1 localhost

I utilized the host file block method during a fresh install of SolidWorks 2024 on a high-security corporate network. The standard installation manager failed repeatedly at the "Initializing" stage due to firewall restrictions blocking callbacks to swdm.solidworks.com and activation.solidworks.com .

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: Some antivirus programs (e.g., SentinelOne or ZoneAlarm) may lock or modify the hosts file to prevent unauthorized communication, inadvertently blocking legitimate SOLIDWORKS traffic. How to Fix a SOLIDWORKS Host File Block solidworks host file block install

With the blocks cleared and the DNS cache flushed, restart the SolidWorks Installation Manager. Run the setup executable by right-clicking it and selecting to guarantee full execution rights over local directories and registry paths. The installer should now successfully contact the validation servers and proceed through the installation layout without interruption.

: When installation media is downloaded as a ZIP, Windows Explorer may block specific HTML files during extraction for security.

By default, Notepad only looks for .txt files. In the bottom-right corner of the Open dialog box, change the dropdown menu from to All Files ( . ) . The hosts file is a system file used

Paste the following path into the address bar at the top of the Open dialog box and press : C:\Windows\System32\drivers\etc

I can provide target troubleshooting steps or the exact URLs needed for your specific deployment. Share public link

…you can block specific domains by editing the . Notepad only looks for .txt files.

Look specifically for entries formatted like these examples: 127.0.0.1 ://solidworks.com 0.0.0.0 ://solidworks.com

(Note: Replace the example domains above with the exact external URLs or update server addresses you want to block within your specific deployment environment. Always use a single tab or spaces between the IP address and the domain name.) 5. Save and Close Click > Save (or press Ctrl + S ). Close the Notepad window. Alternative: Using Windows Defender Firewall