If you installed RSAT but the Microsoft Management Console (MMC) crashes when you open a tool, ensure your Windows 10 20H2 is fully patched. Run Windows Update and install the latest cumulative update (LCU). RSAT relies on system binaries that are updated alongside the OS.

This command queries all RSAT features and installs those that are currently "NotPresent".

Windows looks for the Feature on Demand files on the local WSUS server. If the WSUS server has not been configured to allow "Features on Demand," the download fails.

A central hub for managing multiple remote servers.