Solidworks Host File: Block Best

To ensure Windows immediately drops the old, blocked routing data, click the Start menu, type cmd , right-click , and select Run as administrator .

Change the file type dropdown menu in the bottom-right corner from Text Documents ( .txt)* to .

Troubleshooting SolidWorks Licensing and Activation Issues via Host File Blocks

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Troubleshooting SOLIDWORKS Connection: The "Host File" Fix If you have ever been met with a "Could not access the item in the database" error or found your client unable to "see" the server, you know how frustrating it can be. While it often looks like a complex networking failure, the solution is frequently found in a simple text file: the Windows Hosts file . What is the Hosts File? Solidworks Host File Block

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| Domain | Primary Association | Typical Service Purpose | | :--- | :--- | :--- | | im.solidworks.com | License Management & Installation | Activation checks, license validation, user authentication. | | crashdiag.solidworks.com | Crash Reporting | Sends software crash and error diagnostic data to Dassault. | | performance.solidworks.com | Performance Analytics | Transmits usage metrics and performance statistics back to Dassault. | | www.solidworks.com | Web Services | The main company web portal, can be a fallback for some checks. | | licenses.solidworks.com | Dedicated License Verification | Directly tied to license authentication and online licensing. | | activate.solidworks.com | Activation Process | Handles the license activation and deactivation workflow. | | backupactivate.solidworks.com | Redundant Activation Service | An alternate activation server, often used if the primary is unreachable. | | files.solidworks.com | Download Services | Used by the Installation Manager to download updates and components. | | help.solidworks.com | Online Help & Documentation | Accesses integrated online help guides and resources. | | blog.solidworks.com | Telemetry & Content | Could host web-based content and additional telemetry calls. | | sw.www.solidworks.com.edgekey.net | CDN for Web Assets | Part of Akamai's CDN for delivering web content and assets. |

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For , there is no safe or legal reason to modify the hosts file to block SolidWorks servers. The risks—ranging from legal action and financial penalties to security vulnerabilities and broken software—far outweigh any perceived benefit. If you encounter an error, the only correct action is to work with a legitimate software partner or contact an official SolidWorks reseller to resolve the issue through proper channels. To ensure Windows immediately drops the old, blocked

A lagging DNS setup can cause severe delays or outright timeouts when a client tries to pull a floating license from the network license server. Bypassing the network lookup completely cuts down connection latency during software launch. 3. Preventing Unwanted External Connections

⚠️ Dassault Systèmes changes domains and uses IP rotation. Host file blocking is never fully reliable long-term.

If you work in a corporate environment, always consult your CAD manager or IT department before altering system files, as changes may disrupt company-wide network protocols. If you would like to troubleshoot further, tell me:

I can provide specific firewall rules or configuration steps tailored to your exact setup. Share public link This public link is valid for 7 days

Look for any lines containing solidworks or dassault . Example: 127.0.0.1 ://solidworks.com Delete those lines entirely. Click . Step 4: Flush the DNS Cache

: Search for Notepad , right-click it, and select Run as Administrator .

To block specific server connections or resolve DNS issues in SOLIDWORKS PDM , you must modify the Windows Local Hosts File using an entry that maps an IP address to a server name. Proper Text Entry Format

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