The Sage Update installer runs but then waits with a progress bar sayng "Preparing for first use"
Resolution
- Create a new GPO applying to the RDS server(s) at computer level
- Click through ComputerConfiguration > Administrative Templates > Windows Components > RDS > RDS Session Host > Application Compatability
- Enable "Turn off Windows Installer RDS Compatability"
- Force a GPO update (gpupdate /force) or reboot the RDS Session Host(s)
- Re-run the install