WSUS Client Updates

Some WXP SP2 clients are showing this error in the WSUS console when viewing
status for the computer, 0x8024400a

The Windows Update Log on the client shows this:

2005-05-23 10:20:18 1084 574 AU Triggering AU detection through DetectNow API
2005-05-23 10:20:18 1084 634 AU #############
2005-05-23 10:20:18 1084 634 AU ## START ## AU: Search for updates
2005-05-23 10:20:18 1084 634 AU #########
2005-05-23 10:20:18 1084 634 AU <<## SUBMITTED ## AU: Search for updates
[CallId = {777D0507-3FD1-464C-9B38-D041942A0B9E}]
2005-05-23 10:20:18 1084 44c Agent *************
2005-05-23 10:20:18 1084 44c Agent ** START ** Agent: Finding updates
[CallerId = AutomaticUpdates]
2005-05-23 10:20:18 1084 44c Agent *********
2005-05-23 10:20:18 1084 44c Setup *********** Setup: Checking whether
self-update is required ***********
2005-05-23 10:20:18 1084 44c Setup * Inf file:
C:\WINDOWS\SoftwareDistribution\SelfUpdate\Default \wusetup.inf
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\cdm.dll: target version = 5.8.0.2460, required version =
5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\iuengine.dll: target version = 5.8.0.2460, required
version = 5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\wuapi.dll: target version = 5.8.0.2460, required version
= 5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\wuauclt.exe: target version = 5.8.0.2460, required
version = 5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\wuauclt1.exe: target version = 5.8.0.2460, required
version = 5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\wuaucpl.cpl: target version = 5.8.0.2460, required
version = 5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\wuaueng.dll: target version = 5.8.0.2460, required
version = 5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\wuaueng1.dll: target version = 5.8.0.2460, required
version = 5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\wucltui.dll: target version = 5.8.0.2460, required
version = 5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\wups.dll: target version = 5.8.0.2460, required version =
5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\wups2.dll: target version = 5.8.0.2460, required version
= 5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup Update NOT required for
C:\WINDOWS\system32\wuweb.dll: target version = 5.8.0.2460, required version
= 5.8.0.2339
2005-05-23 10:20:18 1084 44c Setup * IsUpdateRequired = No
2005-05-23 10:20:20 1084 44c PT +++++++++++ PT: Synchronizing server
updates +++++++++++
2005-05-23 10:20:20 1084 44c PT + ServiceId =
{3DA21691-E39D-4DA6-8A4B-B43877BCB1B7}, Server URL =
http://wnyt-dc2/ClientWebService/client.asmx
2005-05-23 10:20:24 1084 44c PT WARNING: SyncUpdates failure, error =
0x8024400A, soap client error = 10, soap error code = 0, HTTP status code =
200
2005-05-23 10:20:24 1084 44c PT WARNING: Sync of Updates: 0x8024400a
2005-05-23 10:20:24 1084 44c Agent * WARNING: Failed to synchronize, error
= 0x8024400A
2005-05-23 10:20:24 1084 44c Agent * WARNING: Exit code = 0x8024400A
2005-05-23 10:20:24 1084 44c Agent *********
2005-05-23 10:20:24 1084 44c Agent ** END ** Agent: Finding updates
[CallerId = AutomaticUpdates]
2005-05-23 10:20:24 1084 44c Agent *************
2005-05-23 10:20:24 1084 44c Agent WARNING: WU client failed Searching for
update with error 0x8024400a
2005-05-23 10:20:24 1084 44c AU >>## RESUMED ## AU: Search for updates
[CallId = {777D0507-3FD1-464C-9B38-D041942A0B9E}]
2005-05-23 10:20:24 1084 44c AU # WARNING: Search callback failed, result
= 0x8024400A
2005-05-23 10:20:24 1084 44c AU #########
2005-05-23 10:20:24 1084 44c AU ## END ## AU: Search for updates [CallId
= {777D0507-3FD1-464C-9B38-D041942A0B9E}]
2005-05-23 10:20:24 1084 44c AU #############
2005-05-23 10:20:24 1084 44c AU AU setting next detection timeout to
2005-05-23 19:20:24
2005-05-23 10:20:29 1084 44c Report REPORT EVENT:
{2F3C0B26-F6E5-4BEE-BC3F-75F5557C38D8} 2005-05-23
10:20:24-0400 1 148 101 {00000000-0000-0000-0000-000000000000} 0 8024400a AutomaticUpdates Failure Software
Synchronization Error: Agent failed detecting with reason: 0x8024400a

Any ideas would be a big help.
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