To resolve the SOLIDWORKS 2018 Activator SSQ Error 6, follow these troubleshooting steps:
, uninstalling all existing license server components, and manually deleting any remaining DLL files in the installation directory before trying again. Registry Resets
For some users, the manual registry and file cleanup can be daunting. In these instances, a third-party tool like has been reported to successfully resolve persistent error 6 issues. While not an official solution, these tools work by deeply scanning for and removing any orphaned SolidWorks license files and registry keys that standard methods might miss. If you choose this path, be extremely cautious and only download such tools from reputable sources to avoid malware.
Understanding the root causes helps prevent the error from recurring:
a common issue typically caused by system incompatibilities, administrative permission failures, or interference from security software
The activator needs high-level permissions to modify system files. Locate the SolidWorks.2017-2018.Activator.SSQ.exe . Right-click on it and choose . 3. Check and Restart FlexNet Licensing Service This is the most common cause for license failures. Press Windows Key + R , type services.msc , and hit Enter.
Unplug your Ethernet cable or turn off your computer's Wi-Fi. This is done to prevent SolidWorks or Windows from making any license validation attempts over the internet, which can interfere with the local activation process. A simple software "disable network adapter" is often not enough.
Modern security tools actively monitor the memory injection techniques used by local license engines. Temporary deactivation is required to complete the setup process. Open the Windows and type Windows Security . Go to Virus & threat protection > Manage settings . Toggle Real-time protection to Off .
: Existing local licensing services from prior installations block the tool from overwriting required license links. Step-by-Step Fixes for Error 6 1. Grant Explicit Administrator Rights