Solidworks Host File Block Install //free\\

Sometimes, an installer may try to contact Dassault Systèmes servers before the proper network license manager (SolidNetWork License Manager) is configured, leading to errors.

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

The mechanism is deceptively simple. The Hosts file is a local plain-text file that maps domain names to IP addresses before the computer queries external Domain Name System (DNS) servers. By editing this file, a user can redirect SolidWorks’ validation domains (e.g., solidworks.com or specific sw.activation servers) to the local loopback address 127.0.0.1 . Consequently, when the installed SolidWorks application attempts to "phone home" to verify its license key, it finds only itself. The connection fails, and the software, believing the server is unreachable rather than blocked, proceeds to run in an offline, activated state. solidworks host file block install

Delete the entire line for any entry that blocks these domains. Alternatively, place a hashtag ( # ) at the very beginning of the line. The hashtag converts the line into a comment, forcing Windows to ignore the block without permanently deleting the data. Step 4: Save the Changes Click and choose Save (or press Ctrl + S ). Close Notepad. Flushing the DNS Cache

When attempting to activate the product post-install, the system throws a communication error, often indicating that the activation server cannot be reached. Step-by-Step Guide to Fix Hosts File Blocks Sometimes, an installer may try to contact Dassault

Many modern antivirus, anti-malware, and firewall solutions actively monitor the hosts file. Some security programs automatically revert user modifications to the hosts file to protect against hijacking malware.

: Modern Windows versions require administrative privileges to modify files in the directory. SOLIDWORKS Forums 2. Common Symptoms "Permission Denied" Error : Explicit error messages stating C:\Windows\system32\drivers\etc\hosts permission denied during the 3DEXPERIENCE Launcher setup. Blank Installation Manager By editing this file, a user can redirect

Malware often modifies the hosts file to redirect your bank to a fake site. If your antivirus sees a modified hosts file, it may flag it as Generic.Malware.Suspicious . You need to add an exception to your AV for C:\Windows\System32\drivers\etc\hosts .

127.0.0.1 akamaitechnologies.com 127.0.0.1 edgekey.net 127.0.0.1 ll-nw.licenses.solidworks.com 127.0.0.1 licensing.solidworks.com

If you frequently move between networks (Office ↔ Home), SolidWorks may see a different IP address and attempt to re-activate, sometimes failing and locking your license. A host block stabilizes the activation.

🛠️ Troubleshooting: SOLIDWORKS Installation Blocked by Hosts File