Sometimes your product key may not work and shows errors. When this error occurs, verify if your Webroot SecureAnywhere is connected to the internet and then try again. An internet connection is necessary to install Webroot. Hence, if not connected to the internet, connect it first. If this method doesn’t work, start your computer in Safe Mode. Apart from that, there could be various other causes for this issue. Here, you will get the full information about causes and solutions for Webroot product keys not working.
The product key is used: If you enter the already used product key to activate your Webroot product then you can get the error while doing so.
Product key not activated yet: Sometimes the product code you are trying to enter is not activated yet in this case it can show some issues.