Solidworks Host File Block Install Jun 2026

If you are cleaning up an environment after removing an old license, ensure that leftover registry keys under HKEY_LOCAL_MACHINE\SOFTWARE\SolidWorks and folder directories in C:\ProgramData\SolidWorks are safely backed up and removed. This ensures the new installer creates a completely fresh, uncorrupted identity. I can provide more targeted steps if you tell me: What or code is showing on the screen?

: Uncheck "Prevent any program from modifying the HOSTs file". ZoneAlarm : In Advanced Settings, uncheck "Lock Hosts File".

Blocking servers can sometimes bypass errors that occur when the installer tries to "phone home" during setup. Step-by-Step: Editing the Hosts File to Block SOLIDWORKS solidworks host file block install

Some advanced network deployments also block swym.3ds.com (SolidWorks Community) and platform.3ds.com (3DEXPERIENCE platform integration).

(SolidNetWork License Manager) by preventing client machines from accidentally querying public servers rather than the local server. If you are cleaning up an environment after

: If the IP address of your license server changes, the hardcoded entry in the hosts file will prevent SOLIDWORKS from launching until the file is manually updated.

The firewall might block the SOLIDWORKS Installation Manager ( sldim.exe ). Open the and navigate to System and Security . : Uncheck "Prevent any program from modifying the

For installing SOLIDWORKS, this feature is often used in two primary scenarios:

This technical guide explains how the Windows hosts file interacts with the SolidWorks Installation Manager, how to identify if a hosts file block is causing your setup issues, and how to safely edit the file to restore connectivity.