Otherwise, you will need to uninstall and reinstall the software, and the below instructions will not work.
If you have MAXIMUM SECURITY, you will need to buy a MAXIMUM SECURITY license. Please note, if you have INTERNET SECURITY, you will need to buy an INTERNET SECURITY license. If you have purchased a new licence for your Trend Micro Security software in-store or over the phone, here are the instructions on how to add the serial number to the software.
