(Update: Changed the Code plug-in to get the formatting correct)
For the last few days I have not been able to run Windows Update on Vista RC1 (I am running Build 5728) even though I am online. I always get the Code 8024400A error (see screen shot below).
Nothing stands out in the event log. Speaking of the Event Log, if you think you can find these failures in “Windows Logs => Systems”, well then think again. 
You would need to go to “Application and Service Logs => Microsoft => Windows => WindowsUpdateClient => Operational” (phew, what a mouthful).
Is anyone else also experiencing this? Any idea what is wrong? If it will help here is the XML from the log:
1 Log Name: Microsoft-Windows-WindowsUpdateClient/Operational 2 Source: Microsoft-Windows-WindowsUpdateClient 3 Date: 06/10/2006 22:15:33 4 Event ID: 25 5 Task Category: Windows Update Agent 6 Level: Error 7 Keywords: Failure,Check for Updates 8 User: SYSTEM 9 Computer: AmitBahree-PC 10 Description: 11 Windows Update failed to check for updates with error 0x8024400a. 12 Event Xml: 13 <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> 14 <System> 15 <Provider Name="Microsoft-Windows-WindowsUpdateClient" Guid="{945a8954-c147-4acd-923f-40c45405a658}" /> 16 <EventID>25</EventID> 17 <Version>0</Version> 18 <Level>2</Level> 19 <Task>1</Task> 20 <Opcode>11</Opcode> 21 <Keywords>0x4000000000000022</Keywords> 22 <TimeCreated SystemTime="2006-10-06T21:15:33.317Z" /> 23 <EventRecordID>174</EventRecordID> 24 <Correlation /> 25 <Execution ProcessID="1160" ThreadID="4708" /> 26 <Channel>Microsoft-Windows-WindowsUpdateClient/Operational</Channel> 27 <Computer>AmitBahree-PC</Computer> 28 <Security UserID="S-1-5-18" /> 29 </System> 30 <EventData> 31 <Data Name="errorCode">0x8024400a</Data> 32 </EventData> 33 </Event>
