You have the option of adding or removing individual program components of the current Avira product installation (see Installation and uninstallation > Installation modules).
If you wish to add or remove modules of the current installation, you can use the option Add or Remove Programs in the Windows control panel to Change/Remove programs.
Select your Avira product and click Change. In the Welcome dialog of the program, select the option Modify. You will be guided through the installation changes.
If you uninstall the Avira SearchFree Toolbar, Web Protection is also uninstalled.