ugs://rdp?host=<HOSTNAME>
Adding generic credentials called UnrealGameSync:RDP to the Windows credential store allows setting defaults for the username/password to be created for machines accessed using this URI, allowing a single click remote into a previously unvisited machine from the Horde dashboard.
#ROBOMERGE-SOURCE: CL 16857008 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v836-16769935)
[CL 16857034 by ben marsh in ue5-release-engine-test branch]