You should renew your license if any of the below messages apply. 


If you upgrade to the most recent version, the following message appears upon startup.
Go to Help->License key and get the following message.
Upon starting DbVisualizer.
Go to Help->License key and get the following message.



Open Help->About. If your Upgrade Expiration date has past, a message is displayed.

You may decide to stay with the version you are currently using. Old versions are available for download.

Renew your license here