Understanding and Fixing SolidWorks 2017 Activator-SSQ Error 6

2.2. Decoding Error 6 In the context of the SSQ activator, Error 6 generally correlates to the Windows System Error Code ERROR_INVALID_HANDLE (0x6) or a proprietary return code from the patcher indicating that a required registry key or service handle could not be opened.

Final Verdict: Is It Worth Fixing Error 6?

Given that SolidWorks 2017 is now several years old, you may ask: Should I spend hours fixing Error 6?

  1. Open Command Prompt as Administrator.
  2. Query existing services: sc query sw_d_SSQ (or sw_d).
  3. Delete conflicting services: sc delete sw_d_SSQ.
  4. Reboot the workstation to flush memory locks.

The Root Causes of Error 6

Through analyzing hundreds of forum threads (XDA, Reddit, CADTutor) and technical logs, we have isolated five primary triggers for Error 6.