Solidworks Host File Block Fix ^new^ | EASY BUNDLE |

SOLIDWORKS Host File Block Fix: A Comprehensive Guide

Are you experiencing issues with SOLIDWORKS due to a blocked host file? Do you see an error message indicating that the software is unable to connect to the license server or access certain features? You're not alone. In this article, we'll explore the SOLIDWORKS host file block fix, a common problem that affects many users. We'll provide a step-by-step guide on how to resolve the issue and get your SOLIDWORKS software up and running smoothly.

What is a Host File?

A host file is a text file used by the operating system to map hostnames to IP addresses. It's a crucial file that helps your computer communicate with other devices on a network. The host file is usually located in the C:\Windows\System32\drivers\etc directory on Windows systems.

What Causes a Host File Block in SOLIDWORKS?

When you install SOLIDWORKS, it may create entries in the host file to facilitate communication between the software and the license server. However, sometimes these entries can become corrupted or blocked, causing issues with the software. Here are some common reasons that can lead to a host file block:

Corrupted or incorrect entries: If the entries in the host file are incorrect or corrupted, SOLIDWORKS may not be able to read them properly, leading to a block.
Antivirus software interference: Some antivirus software may flag the host file as a potential threat and block it, causing issues with SOLIDWORKS.
System configuration changes: Changes to the system configuration, such as updates to the network settings or changes to the license server, can cause the host file to become outdated.

Symptoms of a Host File Block

If you're experiencing any of the following symptoms, it's possible that your host file is blocked: solidworks host file block fix

Error messages: You see error messages indicating that SOLIDWORKS is unable to connect to the license server or access certain features.
License server issues: You're experiencing issues with the license server, such as being unable to activate or deactivate licenses.
Feature access issues: You're unable to access certain features or tools within SOLIDWORKS.

SOLIDWORKS Host File Block Fix: Step-by-Step Guide

To fix the host file block, follow these steps:

Method 1: Manually Editing the Host File

Open the host file: Open the host file in a text editor, such as Notepad, with administrator privileges. To do this, right-click on Notepad and select "Run as administrator."
Locate the SOLIDWORKS entries: Look for entries related to SOLIDWORKS, such as 127.0.0.1 localhost or ::1 localhost. These entries may be at the bottom of the file.
Delete the SOLIDWORKS entries: Delete any entries related to SOLIDWORKS.
Save the file: Save the file and close it.

Method 2: Using the SOLIDWORKS License Server Tool

Download the License Server Tool: Download the SOLIDWORKS License Server Tool from the Dassault Systèmes website.
Run the tool: Run the tool and select the "Fix Hosts File" option.
Follow the prompts: Follow the prompts to fix the host file.

Method 3: Resetting the Host File

Rename the host file: Rename the host file to hosts.old.
Create a new host file: Create a new host file by copying the contents of the hosts.sample file (usually located in the same directory as the host file).
Restart SOLIDWORKS: Restart SOLIDWORKS and see if the issue is resolved.

Additional Troubleshooting Steps

If the above methods don't resolve the issue, try the following: SOLIDWORKS Host File Block Fix: A Comprehensive Guide

Check antivirus software: Check your antivirus software settings to ensure that it's not blocking the host file.
Check system configuration: Verify that your system configuration, including network settings and license server settings, is correct.
Contact SOLIDWORKS support: Contact SOLIDWORKS support for further assistance.

Conclusion

SOLIDWORKS "hosts file block" typically refers to an error where the installer or software cannot write to the Windows hosts file, often due to aggressive antivirus settings or a read-only attribute. This is also a common workaround used to resolve SOLIDWORKS PDM

connectivity issues by manually mapping server names to IP addresses to bypass DNS failures. Fix: Permission Denied or Blocking Error

If you are seeing a "permission denied" error during installation or use: Disable Antivirus Blocks : Certain security software (like SentinelOne

) has specific features that lock the hosts file to prevent hijacking.

: Uncheck "Prevent any program from modifying the HOSTs file." Zone Alarm : In Advanced Settings, uncheck "Lock Hosts File." Remove Read-Only Attribute Navigate to C:\Windows\System32\drivers\etc Right-click the file and select Properties Extension Check : Ensure the file is named exactly with no extension. It should not be How to Manually Edit the Hosts File

To fix PDM connectivity or manually bypass DNS lookups for a SOLIDWORKS server: Open Notepad as Administrator Corrupted or incorrect entries : If the entries

: Search for Notepad in the Start menu, right-click it, and select Run as Administrator Open the File : In Notepad, go to File > Open . Change the file type filter in the bottom right to All Files ( . Navigate to C:\Windows\System32\drivers\etc and select Add Server Mapping

: At the bottom of the file, add a new line with your server's IP address, a space, and then the server name: 192.168.1.100 MyPDMSeverName : After saving, open a Command Prompt and type ipconfig /flushdns to force Windows to recognize the changes immediately. When to Use This Fix PDM Server Resolution

: When the client machine can "ping" an IP but not the server name, indicating a DNS issue. Licensing Errors

: If the SolidNetWork License Manager cannot reach the license server due to name resolution failure. server names for your office network to complete the file edit? Retired - SOLIDWORKS Forums

The Real Risks of Applying This "Fix"

Beyond the fact that it simply doesn't work for modern versions (2018+), attempting this poses serious threats:

3. SolidWorks "Freezes" on Splash Screen

You double-click the icon. The splash screen appears. The loading bar gets stuck at 75%... and stays there forever.

Cause: The software is waiting for a timeout response from a blocked server. (Ironically, blocking the server without the Hosts file causes a 30-second delay; with the Hosts file, it fails instantly).
Fix: Ensures the request returns 127.0.0.1 immediately.

2. When is this Fix Used?

Preventing automatic deactivation of a legitimate network license.
Blocking license verification in certain enterprise environments (with IT approval).
Troubleshooting if SolidWorks is "calling home" too frequently and causing lag.
Note: This does not crack the software. It only blocks communication.

8. Alternative (More Reliable) Methods

If the host file fix keeps failing (modern Windows sometimes ignores localhost redirection for certain apps), try:

Firewall block: Create outbound rules in Windows Defender Firewall for sldworks.exe and swactwiz.exe.
LMTOOLS (for network licenses): Use the license manager to specify a non-existent server.

5. Verification: Did it Work?

Step 1: Locate the Hosts File

Do not use Notepad shortcuts. Go directly to: C:\Windows\System32\drivers\etc\hosts Note: There is no file extension. It is just called hosts.