Solidworks Host File Block Install

SOLIDWORKS installation failures or hangs, particularly during activation, can often be resolved by removing blocks for solidworks.com domains within the Windows "hosts" file [1]. Users should open Notepad as an administrator, locate the file at C:\Windows\System32\drivers\etc , remove lines referencing solidworks.com, and save the file to restore connectivity [1].

This article explores why someone might use a approach, the risks involved, and the correct, compliant methods for ensuring a successful installation. What is the SolidWorks Host File?

By blocking activation servers, you are technically circumventing a technical limitation—even if you own a perpetual license. In the event of an audit (Dassault is known for aggressive BSA audits), a modified hosts file is a red flag. Keep your purchase receipts handy. solidworks host file block install

Which of SolidWorks are you attempting to install? Share public link

Instead of using a hosts file block, which can cause long-term instability, use these authorized methods for troubleshooting: 1. Fix License Manager Communication (Firewall) What is the SolidWorks Host File

: Ensure your firewall allows outbound TCP connections on port 80 for sldimdownloader.exe www.javelin-tech.com Are you seeing a specific error code like "Permission Denied" or a blank screen when the installer launches?

Strict corporate environments sometimes use local hosts files to restrict software communication until the IT department manually approves the license server connections. Symptoms of a Hosts File Block Keep your purchase receipts handy

Below is the definitive list for a . Copy these lines exactly. Do not add spaces where they don't belong.

If you want to allow the installation of SolidWorks, simply remove the entries you added to the hosts file.

Windows caches previous DNS lookups. Even if you edit the hosts file, Windows might remember the real IP address for im.solidworks.com and ignore your changes if you don't flush the cache. Press Win + R , type cmd , and press Ctrl + Shift + Enter to open an elevated Command Prompt. Type ipconfig /flushdns and press Enter.

If cleaning the hosts file does not completely restore functionality, consider the following complementary troubleshooting steps: Check Third-Party Firewalls