The error is rarely an issue with the SolidWorks design software itself. Instead, it stems from how the legacy third-party activation tool interacts with your current Windows environment.

The "Error 6" encountered with the SolidWorks 2018 SSQ activator often refers to an Access Violation or a compatibility conflict

For persistent cases, review the SolidWorks license manager logs:

Your computer's security settings are often the biggest culprit. You'll need to create a safe "operating environment" for the activation process.

Check the box at the bottom for . Click Apply and launch the activator program.

: Temporarily disable your antivirus and re-extract the activator files from the original archive.

This simple step resolves many permission‑related errors.

The "SSQ" likely refers to a specific group or source that provides such activators.