Solidworks 2018 Activator Ssq Error 6 May 2026

If the GUI activator repeatedly fails with Error 6:

Troubleshooting SolidWorks 2018 Activator SSQ Error 6 If you are attempting to license SolidWorks 2018 using the SSQ (SolidSquad) activator and encounter Error 6, you are dealing with a communication failure between the software and the licensing service. Specifically, Error 6 usually indicates that the SolidWorks Licensing Service is not running or the activator was unable to properly modify the system Registry to point to the virtual license server. What Causes Error 6?

This error typically surfaces during the "Activate" phase of the SSQ tool. The primary culprits are:

Disabled Services: The "SolidWorks Flexnet Service" is stopped or disabled.

Permissions: The activator was run without Administrative privileges.

Security Interference: Windows Defender or third-party antivirus software blocked the Registry modification. solidworks 2018 activator ssq error 6

Residual Files: Leftover licensing files from previous installations or failed activation attempts. Step-by-Step Solutions 1. Run as Administrator

The SSQ activator requires deep access to the Windows Registry and System32 folders. Right-click the SolidWorks.2018.Activator.SSQ.exe. Select Run as Administrator. Retry the activation steps. 2. Check the SolidWorks Licensing Service Error 6 often means the service simply isn't "awake." Press Win + R, type services.msc, and hit Enter. Locate SolidWorks Licensing Service in the list.

Ensure the Status is Running. If it is stopped, right-click and select Start. Ensure the Startup Type is set to Automatic. 3. Clear Registry and License Folders

If a previous activation failed, old data might be blocking the new license. Stop the Licensing Service in services.msc.

Navigate to C:\ProgramData\SolidWorks (you may need to enable "Hidden Items" in File Explorer). Delete any folder named Licenses. If the GUI activator repeatedly fails with Error

Open the Registry Editor (regedit) and navigate to HKEY_LOCAL_MACHINE\SOFTWARE\SolidWorks.

If there is a sub-folder related to licensing or SSQ specifically, back it up and delete it. 4. Disable Antivirus and Firewall

Security software often flags SSQ tools as "Malware-Gen" because they modify system files. Temporarily disable Windows Defender Real-time protection. Disable any third-party antivirus (Avast, McAfee, etc.).

Run the activator again. Once the "All Done!" message appears, you can re-enable your security. 5. Proper Activation Sequence

To avoid Error 6, ensure you follow the SSQ sequence exactly: Force Recursion: Use the "Set Serial Numbers" button first. If Error 6 persists, the GUI-based offset patching

Activate Licenses: Use the "Activate Licenses" button. This is where Error 6 usually happens—ensure the "SolidWorks_Flexnet_Server" folder is copied to C:\ before clicking this.

Install SolidWorks: Only after these steps should you run the SolidWorks Setup. Summary Table of Fixes Potential Issue Fix Action Lack of Permissions Right-click -> Run as Administrator Service Inactive Start "SolidWorks Licensing Service" in services.msc Antivirus Block Disable Real-time protection during activation Registry Conflict Clean ProgramData and HKEY_LOCAL_MACHINE

Disclaimer: The following essay is for educational and informational purposes only. The use of software activators, cracks, or patches to bypass licensing requirements is illegal and violates software copyright laws. Furthermore, modifying system files with unauthorized tools poses significant security risks, including malware infection and system instability.


  • Contact your SolidWorks reseller first (they manage entitlements) or use SolidWorks Customer Portal to open a support case.
  • If Error 6 persists, the GUI-based offset patching is failing. Use the manual method:

  • Use the SSQ License Server folder to run server_install.bat as admin.
  • Set environment variable: SW_LICENSE_FILE=25734@localhost
  • This bypasses the GUI patcher entirely, avoiding Error 6.