I'm still in the process to replace my well working (more or less) Windows 2008 R2 WSUS with new installation of Windows 2019 WSUS and still not able to get a viable system. I'm running from error to error and sometimes the mmc suddenly stops working. It takes hours to get a new client noticed by WSUS. And even after some days none of the client have reported yet.
Does anybody have a satisfying WSUS running?