Prepping exchange for upgrade from cu19 to CU22... if i run the setup.exe /PrepareSchema /(licensestuffblahblah) in cmd, it gives me the error that the schema is not ready and fails, same as the wizard. I don't need to run the /PrepareSchema command if exchange is already installed, do I? Should i go directly to the /PrepareAD command? And on a single domain, i don't need to run the /PrepareDomain command do i? I'm getting mixed signals from the documentation.