Solidworks Host File Block Install

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

At the bottom of the file, add a clear comment and then the list of domains. For example:

# SolidWorks Block List - Added on YYYY-MM-DD
# Licensing
127.0.0.1 activation.solidworks.com
127.0.0.1 license.solidworks.com
Blocking the hosts file on a SolidWorks Network License Manager server is not recommended. The server needs to communicate with Dassault to manage borrowing and compliance. Instead, block only on client workstations to prevent them from bypassing the license server. solidworks host file block install

Some SolidWorks network licenses rely on a "Heartbeat." If the software cannot ping the activation server every 30 to 90 days, it assumes the license is stolen and disables itself. Adding a block stops this remote kill-switch.
127.0.0.1 updates.solidworks.com

Save the file (Ctrl+S).

127.0.0.1 license.solidworks.com 127.0.0.1 solidworks.com 127.0.0.1 sw.install.solidworks.com 127.0.0.1 activation.solidworks.com 127.0.0.1 register.solidworks.com 127.0.0.1 log.solidworks.com

Note: The exact domains change over time and depend on your SolidWorks version. Network monitoring is needed to find all current endpoints. If you own a valid, perpetual SolidWorks license