WindowsUpdateの更新プログラムの確認を行ったところ、以下のエラーコードを出力し、更新プログラムの確認に失敗しました。
エラーコード：80204404
端末等の情報は以下の通りです。
OS ：Windows Vista
セキュリティソフト ：McAfee セキュリティセンター
ネットワーク ：ルータを介して、無線で接続しています。
McAfeeのファイアウォールを無効にして再実行しましたが、改善しません。
ログを確認したところ、以下の通りだったのですが、対処方法がわかりません・・・。
どなたか助けていただけないでしょうか？
2013-08-1718:20:02:7911216ca0MiscValidating signature for C:\Windows\SoftwareDistribution\WuRedir\7971F918-A847-4430-9279-4A52D1EFE18D\muredir.cab:
2013-08-1718:20:02:8041216ca0MiscMicrosoft signed: Yes
2013-08-1718:20:02:9941216ca0MiscValidating signature for C:\Windows\SoftwareDistribution\WuRedir\7971F918-A847-4430-9279-4A52D1EFE18D\muredir.cab:
2013-08-1718:20:03:0061216ca0MiscMicrosoft signed: Yes
2013-08-1718:20:03:0121216ca0MiscValidating signature for C:\Windows\SoftwareDistribution\WuRedir\7971F918-A847-4430-9279-4A52D1EFE18D\muredir.cab:
2013-08-1718:20:03:0261216ca0MiscMicrosoft signed: Yes
2013-08-1718:20:03:0921216ca0MiscValidating signature for C:\Windows\SoftwareDistribution\WuRedir\7971F918-A847-4430-9279-4A52D1EFE18D\muredir.cab:
2013-08-1718:20:03:1081216ca0MiscMicrosoft signed: Yes
2013-08-1718:20:03:1141216ca0MiscValidating signature for C:\Windows\SoftwareDistribution\WuRedir\7971F918-A847-4430-9279-4A52D1EFE18D\muredir.cab:
2013-08-1718:20:03:1291216ca0MiscMicrosoft signed: Yes
2013-08-1718:20:04:1381216ca0MiscValidating signature for C:\Windows\SoftwareDistribution\WuRedir\7971F918-A847-4430-9279-4A52D1EFE18D\muredir.cab:
2013-08-1718:20:04:1691216ca0MiscMicrosoft signed: Yes
2013-08-1718:20:04:1871216ca0PT+++++++++++ PT: Synchronizing server updates +++++++++++
2013-08-1718:20:04:1871216ca0PT + ServiceId = {7971F918-A847-4430-9279-4A52D1EFE18D}, Server URL = https://fe1.update.microsoft.com/v6/ClientWebService/client.asmx
2013-08-1718:20:04:1871216ca0PTWARNING: Cached cookie has expired or new PID is available
2013-08-1718:20:06:9531216ca0PTWARNING: GetCookie failure, error = 0x80244004, soap client error = 4, soap error code = 0, HTTP status code = 200
2013-08-1718:20:06:9541216ca0PTWARNING: PTError: 0x80244004
2013-08-1718:20:06:9541216ca0PTWARNING: GetCookie_WithRecovery failed : 0x80244004
2013-08-1718:20:06:9541216ca0PTWARNING: RefreshCookie failed: 0x80244004
2013-08-1718:20:06:9541216ca0PTWARNING: RefreshPTState failed: 0x80244004
2013-08-1718:20:06:9541216ca0PTWARNING: Sync of Updates: 0x80244004
2013-08-1718:20:06:9541216ca0PTWARNING: SyncServerUpdatesInternal failed: 0x80244004
2013-08-1718:20:06:9541216ca0Agent * WARNING: Failed to synchronize, error = 0x80244004
2013-08-1718:20:07:4611216ca0Agent * WARNING: Exit code = 0x80244004
2013-08-1718:20:07:4611216ca0Agent*********
2013-08-1718:20:07:4611216ca0Agent** END ** Agent: Finding updates [CallerId = AutomaticUpdates]
2013-08-1718:20:07:4611216ca0Agent*************
2013-08-1718:20:07:4611216ca0AgentWARNING: WU client failed Searching for update with error 0x80244004
2013-08-1718:20:07:49812161660AU>>## RESUMED ## AU: Search for updates [CallId = {36EC4BA5-A452-4C56-A272-9CB90B2B1E2F}]
2013-08-1718:20:07:49912161660AU # WARNING: Search callback failed, result = 0x80244004
2013-08-1718:20:07:49912161660AU # WARNING: Failed to find updates with error code 80244004
2013-08-1718:20:07:49912161660AU#########
2013-08-1718:20:07:49912161660AU## END ## AU: Search for updates [CallId = {36EC4BA5-A452-4C56-A272-9CB90B2B1E2F}]
2013-08-1718:20:07:49912161660AU#############
2013-08-1718:20:07:49912161660AUNeed to show Unable to Detect notification
2013-08-1718:20:07:50012161660AUAU setting next detection timeout to 2013-08-17 14:20:07
2013-08-1718:20:07:50012161660AUSetting AU scheduled install time to 2013-08-17 18:00:00
2013-08-1718:20:12:4611216ca0ReportREPORT EVENT: {CE32D56A-8CCB-462D-AEF9-462F2EC70181}2013-08-17 18:20:07:460+09001148
101{00000000-0000-0000-0000-000000000000}0
80244004AutomaticUpdatesFailureSoftware SynchronizationWindows Update Client failed to detect with error 0x80244004.
2013-08-1718:20:12:4811216ca0ReportCWERReporter::HandleEvents - WER report upload completed with status 0x8
2013-08-1718:20:12:4811216ca0ReportWER Report sent: 7.6.7600.256 0x80244004 00000000-0000-0000-0000-000000000000 Scan 101 Unmanaged
2013-08-1718:20:12:4811216ca0ReportCWERReporter finishing event handling. (00000000)