If you can not install Windows 10 Features On Demand, you must configure Group Policy to access Windows Update directly to download and install FOD.
Starting with Windows 10 version 1809, Feature On Demand (FOD) modules and language packs can only be installed from Windows Update and not through WSUS. They can only be added using DISM / Add-Capability (and not / Add-Package). cab files, but are installed by specifying a single / feature name. These FOD files are distributed as a set of multiple.
cab file and can be added using DISM / Add-Capability or / Add-Package. Windows offers two types of on-demand features: See also Fix Rapid Battery drain on Windows 10 systems using Hybrid Graphics
