Enter Trend micro activation code on www.trendmicro.com/activate to download and activate Trend Micro. To activate Trend micro, make sure you already have an activation code that you’ll probably enter on the trend micro activation site.
Steps to Activate Trend Micro
To activate the Trend Micro install on your personal system, carry out the guidelines that are provided below.
Open the Main console of the Trend Micro security software by double-clicking on the Trend Micro icon on the computer.
Else, go to the System Tray window and then double-click on the Trend Micro option.
A Not Yet Activated dialog box displays on your personal computer.
Choose the Activate Now button and a Too Many Installations pop-up window appears on the screen.
Enter the Trend Micro Account password in the Password box and then click on the Next button.
Choose your PC or device on which you have activated the software previously.
Now, enter the name of your personal computer and select Next. Click on the Finish button for activating the protection on your system.
Hope this helps you out.