Beware! I got a notification on my SCCM server that it was failing to get updates, checked the logs and was presented with this..
note the date started...
The behavior was the WSUS service was stopping itself for no apparent reason, windows logs showed: "The WSUS Service service terminated unexpectedly. It has done this 4 time(s)."
So i then checked any updates applied to my server on that date and found.
How ironic, windows update breaks windows update. As soon as i removed the KB everything started to work again!