I’ve just installed WSUS 3.0 on a new server and decommissioned WSUS 2.0 on our old server. On our 2.0 server I had both WSUS and Sharepoint installed which presented me with a few issues when I tried to upgrade it to 3.0.
However having set the Group Policy to simply http://mercury for both settings and waiting a day, no clients were registered. I trawled through all of the documentation and there was no reference to doing anything different if WSUS was not on port 80. You’ll notice from the IIS setup that it did indeed create virtual directories on the port 80 web implying that this should work.
Well, here’s the answer, YOU HAVE TO SET THE PORT NUMBER on the URL, this would also apply if you were directly fiddling with the settings in the registry at: