Some subscriber installs Webroot product setup on the device which they don't use after some period. At this situation, Webroot setup provides the feature to transfer your Webroot license from one device to another device. In the event that you have expelled Webroot Security from a gadget (for example PC), and now you might want to introduce it onto another gadget (for example another PC), you continue as like you are introducing it onto an extra gadget. In case you are certain that you won’t utilize Webroot Security again on the gadget it is being expelled from, you can free up the permit by going to Manage My Installs in your Webroot account where you can expel the gadget from the rundown. www.webroot.com/safe
The establishment procedure onto another gadget can be begun from inside your Webroot account.
Note: If you have purchased your product from the Webroot Online Store or from a retail store then this process is valid.
You can transfer your Webroot subscription from this way:
For installing the Webroot antivirus, just find the way to the official site via webroot.com/safe.
learn here this link: What is Zero- Day Attack and How to Protect Yourself from this?