Hello, I'm administrator of a Windows Server SBS 2011 machine which has been having problems with Windows Updates for several months.
It won't download the updates, so neither server nor clients (which use the server as update source) are updated.
When I try to manually download, I get error 8024400E.
On event viewer I've got many ID 16 events with "WindowsUpdateClient" origin, stating "Could not establish connection. It is not possible to connect to the Automatic Updates service and therefore it is not possible to download and update the updates according to the set schedule. Other connection attempts will be established." (This may not be the actual English text, I translated from Italian).
I already had similar problems years ago, but the errors were different.
Under the registry folder I have two keys WUServer and WUStatusServer pointing to http://SBSNAME:8530
, so I guess the server is unable to connect to itself?