This policy setting controls whether users can install packages from a website that is using the ms-appinstaller protocol. The ms-appinstaller protocol allows users to install an application by clicking a link on a website.The recommended state for this setting is: Disabled .Fix:(1) GPO: Computer Configuration\Policies\Administrative Templates\Windows Components\Desktop App Installer\Enable App Installer ms-appinstaller protocol(2) REG: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\AppInstaller:EnableMSAppInstallerProtocol