Are you using or a specific third-party antivirus ?
in your antivirus for your SolidWorks installation and activator directories.
Windows Defender or third-party antivirus software has quarantined the activator files. solidworks 2018 activator ssq error 6
Go to the activator folder and run the _SolidSQUAD_Trash_Cleanup.bat file (if included) as an administrator. Best Practices for Using SSQ Activators
The SSQ activator requires deep system access to modify registry keys and local services. Navigate to your extracted SSQ folder. Right-click on the SolidWorks.2018.Activator.SSQ.exe file. Select . 2. Disable Antivirus and Windows Defender Are you using or a specific third-party antivirus
Extract the SSQ archive again (in case your antivirus deleted a component) and rerun the activator. 3. Stop the Flexnet Licensing Service
Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\FLEXlm License Manager Go to the activator folder and run the
If you see keys related to SolidWorks or SSQ, right-click and delete them.
Residual registry keys from failed installations often cause this error. Press Windows Key + R , type regedit , and hit Enter.
Scroll down and locate or SolidWorks Licensing Service . Right-click the service and select Stop . Try running the activator again. 4. Clean Up Old Registry Keys
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