To delete a license key, navigate to Configuration > Licenses
Select the license key that you want to delete, clickon its context menu, then select "Delete" from the menu
Press "YES" to continue.
If the server does not have an Internet connection, then you will get the error message:
Press "CLOSE"
You will then get the prompt below:
Now, you need to copy the "Removal Code", and visit the URL below on a PC that has an Internet connection
https://license.deepnetsecurity.com/register/remove-license.htm
Paste the "Removal Code"
Press "Submit"
