Solidworks: Host File Block

Change the file type filter (bottom right) from "Text Documents ( .txt)" to **"All Files ( Select the file and click 3. Adding the Blocks

In a legitimate IT context, editing the hosts file is a standard troubleshooting step. For example, if a VPN connection is causing slow or failed lookups for a SolidWorks PDM (Product Data Management) server, an administrator can add a direct IP-to-name mapping to bypass the DNS delay. This use case is fully compliant and recommended for specific, temporary scenarios.

Modern Endpoint Detection and Response (EDR) platforms and antivirus software strictly monitor the integrity of the Windows hosts file. Unauthorized or automated changes to this file are a common tactic of malware (DNS hijacking). Manually editing the file may trigger high-severity security alerts within an enterprise IT network. Alternative Solutions for Enterprise Management

Using a modified hosts file to bypass license checks constitutes software piracy. The EULA for SolidWorks explicitly grants the user the right to use the software only under specific, paid conditions. Bypassing these checks is a breach of contract. Furthermore, it is a violation of the DMCA, which prohibits circumventing “a technological measure that effectively controls access to a work”. Legal actions have been filed against individuals and companies for using similar bypass methods, including the use of tools like “SolidSquad (SSQ)”. Solidworks Host File Block

Are you working on a or a standalone personal computer?

SolidWorks (and its background services like SW Licensing Service, SolidWorks FlexNet Server, and Publisher) makes outbound HTTP/HTTPS calls to specific Dassault Systèmes domains.

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Antivirus programs like SentinelOne , ZoneAlarm , and Webroot may lock the host file to prevent malicious changes, which inadvertently stops legitimate network troubleshooting. Step-by-Step: How to Unblock and Configure the Host File

By explicitly linking the name and IP, you eliminate the "guesswork" for your computer. This is especially helpful in WAN environments or when local firewalls/DNS settings are being overprotective and "blocking" the standard handshake between your machine and the . Pro-Tips for Success

Below is the consolidated list of domains that SolidWorks typically communicates with. To implement the block, you must map all of these to 127.0.0.1 . This use case is fully compliant and recommended

While often viewed as a "block," this is usually a that can be bypassed by manually configuring the Windows hosts file to act as a local directory. Understanding the Host File "Block"

: Ensure you have local Windows Administrator credentials, or you won't be able to save your changes.