Licensing stopped working in adobe cs3

Hi dear,
Why this error appear again and again In Adobe Illustrator.

Licensing for this product has stopped working.
This product has encountered a problem requires
that you restart your computer before it can be launched.
If you continue to see this message after restarting your
computer, please contact either your IT administrator or Adobe
technical support for help, and mention the error code shown
at the bottom of this screen.
Error: 6
https://helpx.adobe.com/support.html
OK
