Hello Yanhua,
I assume you are seeing a message like:
"A problem was encountered accessing the proper security device."
or:
"A problem was encountered accessing the proper security device. The device may be missing or have invalid information. The application will be terminated immediately."
As a result SolidWorks will close down. As part of the shutdown it will unload add-ins.
For my understanding, what is it you would like to achieve ?
Regards,
Frank