We have SCCM/MECM in our environment. We have the GPO setting "Specify settings for optional component installation and component repair" set to Enabled with the appropriate options checked. That fixed the issue when we couldn't install RSAT tools on our Windows 10 machines. But, that doesn't seem to be the case with our Windows 11 machines. When I try to install RSAT tools on a Windows 11 machine in our environment it fails. From the optional feature history on the device I'm trying to install the tools on it shows the tools "Couldn't Install" with the message "Check you Windows Insider Program settings"
