If your hosts file is completely clean but the installation still fails, an active software firewall or antivirus program is likely mimicking the host block at the network layer. Configure Windows Defender Firewall
127.0.0.1 updates.solidworks.com 127.0.0.1 download.solidworks.com 127.0.0.1 files.solidworks.com 127.0.0.1 solidworks-updates.com 127.0.0.1 swdownload.solidworks.com
: If the hosts file is manually set to "Read-only" in its file properties, the installer will be unable to update the necessary DNS mappings. File Mismanagement : If the file was accidentally renamed to solidworks host file block install
This guide is intended for educational and technical troubleshooting contexts. It explains a common method used to prevent SolidWorks from “phoning home” to validate licenses or check for updates during a specific installation workflow.
The Installation Manager fails to download individual component prerequisites, showing blank status screens or explicit transfer errors. If your hosts file is completely clean but
Right-click the Windows Start button and select or Command Prompt (Admin) . Type the following command and press Enter : ipconfig /flushdns Use code with caution.
This article assumes you are using a legitimately purchased license . Blocking outbound calls is legal for privacy and stability when you have a perpetual license key. This guide does not condone software piracy. Using these methods to crack software is illegal and dangerous. It explains a common method used to prevent
Firewalls frequently block outbound connections initiated by new software installers.
: Search for Notepad in your Start menu, right-click it, and select Run as Administrator .
127.0.0.1 activation.solidworks.com 127.0.0.1 license.solidworks.com 127.0.0.1 solidworks.com.akadns.net 127.0.0.1 register.solidworks.com 127.0.0.1 sw.activate.com 127.0.0.1 activate.solidworks.com 127.0.0.1 solidworks.licensing.com
Blocking SolidWorks installations or license activation via the hosts file is a method some administrators use to prevent unauthorized activation or to stop SolidWorks from contacting specific network license servers or online activation servers. Below is a concise, practical overview covering what it is, why and when it’s used, how it’s done, the risks and limitations, and safer alternatives.