We are running 2011 SP1 - HR1. Recently we started getting the following sequence of messages in the message centre when starting the GUI
The remote server returned an error: (404) Not Found
The remote server returned an error: (404) Not Found
The remote server returned an error: (404) Not Found
The remote server returned an error: (404) Not Found
The remote server returned an error: (404) Not Found
The remote server returned an error: (404) Not Found
The remote server returned an error: (404) Not Found
Loading list of languages failed
The remote server returned an error: (404) Not Found
Loading list of locales failed
The browser itself is not getting a 404 status on any response, so this looks to me like failed requests against the core service running server-side. However, I haven't been able to find any matching evidence in the logs on the server.
What further steps can I take to diagnose the root cause? Is there more logging available that I can enable? Are there any likely causes that I should be aware of?
What might be the cause of this happening on a previously well-behaved system? (I'm thinking Windows update.... anyone else seen a recent bad patch? What else might it be?)
Update: we are seeing 401 statuses for URLs such as /WebUI/Core/Controls/Tree/TreeHead.xml
. Might this be related?
Update: Once the GUI has loaded, you can navigate around, and normal item lists will populate as normal, but if you try to load a list of users, you get the 404 again. The user preferences box loads Ok, but the language/locale lists are empty - I guess the GUI only tries to load them once. Can this be something specific to system lists?