This article also covers related topic such as the current workaround. The issue only applies to Windows 10 client connected to Windows Server 2016 Essentials, Windows Server 2012 R2 Essentials, Windows Server 2012 Essentials and Windows Small Business Server 2011 Essentials. This article describes the issue – Windfeature upgrade removes the already installed client connector and breaks the Essentials features such as client backup, Remote Web Access, LaunchPad App etc.