Solidworks Host File Block Direct

The hosts file is powerful. If you accidentally block a legitimate activation server, you might find yourself locked out of your seat entirely. Always make a backup of your original hosts file before you start tinkering.

Disabling validation can cause SolidWorks to enter "license not found" mode after a grace period (e.g., 30 days). Periodic online checks are required for most network and standalone licenses.

The Windows hosts file is a plain-text document located at C:\Windows\System32\drivers\etc\ . It is the first place Windows looks when trying to find a server. If there is an error in this file, or if it is intentionally blocked by security software, SolidWorks PDM or SolidNetWork License (SNL) Manager will fail to connect.

: Save the file. If Windows denies saving, right-click the hosts file in File Explorer, select Properties , and ensure Read-only is unchecked. Troubleshooting Common Blocks Solidworks Host File Block

: Check your security software settings. For instance, in Webroot , you may need to uncheck "Prevent any program from modifying the HOSTs file".

The Windows is a plain-text system file used to map hostnames to IP addresses before the system queries a DNS server. By manipulating this file, a user can redirect network traffic intended for a legitimate domain (e.g., localhost ).

If you are reading an old tutorial from 2018 or 2020, the classic host file block will not work for SolidWorks 2023 SP2.0 or newer. Here is why: The hosts file is powerful

This article provides a comprehensive guide on what a is, why it is used, and how to safely implement it. What is the SolidWorks Hosts File Block?

The SNL Manager communicates via ports 25734 and 25735 . If the host file doesn't point to the correct server, you’ll see "Could not obtain a license for SOLIDWORKS".

: If the Windows built-in tools block downloaded .html files in the installation set, the SOLIDWORKS Installation Manager may fail. You must right-click the files and select Unblock in the properties menu. Disabling validation can cause SolidWorks to enter "license

Student editions have watermarks and expiration dates. Blocking the host file does not remove the watermark. It only breaks the license check, causing the software to crash after 30 days.

Manually mapping host files, if not done precisely, can cause connectivity issues for other software or lead to confusion if the server IP changes in the future. GoEngineer