Since there is no direct download to this component, the only way to install it is to re-run the setup package. If you have the package installed, please go to Control Panel and locate Add/Remove programs (Programs in Windows Vista/7/8), then identify Avira on the list and start the uninstalling procedure. Except that, you will need to select Modify instead of Uninstall. On the next screens choose Avira Webguard and continue the installation.