I'm not the DB admin, so i dont want to go the port settings.
But I did the next best thing and installed WSUS with the local DB.
Even if the wsuservice.exe is stopped, the IIS websites are still messed up.
For the record, SEPM seems to work fine. The few test clients report back and update policies, deployment works also. But I'm planning to install WDS and SCCM on this server too and I'd like that SEPM works fine with WSUS so that I won't run into problems later.
I found one similar case here on Symantec forums, but it wasn't resolved either. Weird that there aren't more threads about this since I have been able to duplicate the issues multiple times with two different servers. Maybe it won't show on day to day usage, but why the support tool errors then?