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 trendmicro.com/activate site. Trend micro account is also another essential aspect when you install on your computer. Read and accept Trend Micro License Agreement at www.trendmicro.com/activate site to begin the installation.