Complete Trend Micro Activation from www.trendmicro.com/activate using the product key. Enter your activation code and sign in to download its products. Make sure you accept the Trend micro license Agreement you receive on www.trendmicro/activate to register your product securely. To activate Trend micro, make sure you already have an activation code that you’ll probably enter on the trend micro activation site. www.trendmicro.com/activate to download and activate Trend Micro.