Hi I am not able to update my windows server 2008r2 sp1.It is showing an error that it encountered an unknown error is 80244021. When i go through windowsupdate.log it is coming like this 2011-06-26 11:05:49:769 980 7d4 DnldMgr Generating download request for update {0D2E3199-123E-4615-A92F-F92138286281}.100 2011-06-26 11:05:49:815 980 7d4 Handler Generating request for CBS update 0D2E3199-123E-4615-A92F-F92138286281 in sandbox C:\Windows\SoftwareDistribution\Download\a543d320917cc076e8e610416db300c0 2011-06-26 11:05:49:815 980 7d4 Handler Selected payload type is ptExpress 2011-06-26 11:05:49:815 980 b68 AU AU checked download status and it changed: Downloading is not paused 2011-06-26 11:05:49:815 980 7d4 Handler Detected download state is dsStart 2011-06-26 11:05:49:815 980 7d4 Handler Adding Windows6.1-KB2506928-v2-x64-EXPRESS.cab (entire file) to request list. 2011-06-26 11:05:49:815 980 2c0 DnldMgr Error 0x80244021 occurred while downloading update; notifying dependent calls. 2011-06-26 11:05:49:815 980 7d4 Handler Request generation for CBS update complete with hr=0x0 and pfResetSandbox=0 2011-06-26 11:05:49:815 980 7d4 DnldMgr *********** DnldMgr: New download job [UpdateId = {FC1BAD14-3330-4129-9ED0-CCFCFF967894}.101] *********** 2011-06-26 11:05:49:815 980 7d4 DnldMgr Regulation: {9482F4B4-E343-43B6-B170-9A65BC822C77} - Update FC1BAD14-3330-4129-9ED0-CCFCFF967894 is "Defaults" regulated and can NOT download. Sequence 1806 vs AcceptRate 0. 2011-06-26 11:05:49:815 980 7d4 DnldMgr * Update is not allowed to download due to regulation. 2011-06-26 11:05:49:815 980 7d4 DnldMgr Regulation: {9482F4B4-E343-43B6-B170-9A65BC822C77} - Update FC1BAD14-3330-4129-9ED0-CCFCFF967894 is "Defaults" regulated and can NOT download. Sequence 1806 vs AcceptRate 0. 2011-06-26 11:05:49:847 980 7d4 DnldMgr *********** DnldMgr: New download job [UpdateId = {0D2E3199-123E-4615-A92F-F92138286281}.100] *********** 2011-06-26 11:05:49:893 980 7d4 DnldMgr * BITS job initialized, JobId = {8CCAAF81-0CBA-499B-8A80-F67001B79FFA} 2011-06-26 11:05:49:893 980 7d4 DnldMgr BITS job {8CCAAF81-0CBA-499B-8A80-F67001B79FFA} using proxy = proxy.dnet.diwan:8080, bypass = diw-ems-02;192.168.150.20;<local> 2011-06-26 11:05:49:940 980 7d4 DnldMgr * Downloading fromhttp://download.windowsupdate.com/msdownload/update/software/updt/2011/04/windows6.1-kb2506928-v2-x64-express_23d6b471222697d7fba8e25c305ab6d661dd4324.cab to C:\Windows\SoftwareDistribution\Download\a543d320917cc076e8e610416db300c0\Windows6.1-KB2506928-v2-x64-EXPRESS.cab (full file). 2011-06-26 11:05:50:034 980 2c0 DnldMgr Error 0x80244021 occurred while downloading update; notifying dependent calls. 2011-06-26 11:05:50:034 980 2c0 DnldMgr WARNING: BITS job {8CCAAF81-0CBA-499B-8A80-F67001B79FFA} failed, updateId = {0D2E3199-123E-4615-A92F-F92138286281}.100, hr = 0x80190197, BG_ERROR_CONTEXT = 5 2011-06-26 11:05:50:034 980 2c0 DnldMgr Progress failure bytes total = 66771, bytes transferred = 0 2011-06-26 11:05:50:034 980 2c0 DnldMgr Failed job file: URL =http://download.windowsupdate.com/msdownload/update/software/updt/2011/04/windows6.1-kb2506928-v2-x64-express_23d6b471222697d7fba8e25c305ab6d661dd4324.cab, local path = C:\Windows\SoftwareDistribution\Download\a543d320917cc076e8e610416db300c0\Windows6.1-KB2506928-v2-x64-EXPRESS.cab 2011-06-26 11:05:50:065 980 2c0 DnldMgr WARNING: Download job failed because of proxy auth or server auth. 2011-06-26 11:05:50:065 980 2c0 DnldMgr *********** DnldMgr: New download job [UpdateId = {FC1BAD14-3330-4129-9ED0-CCFCFF967894}.101] *********** 2011-06-26 11:05:50:065 980 2c0 DnldMgr Regulation: {9482F4B4-E343-43B6-B170-9A65BC822C77} - Update FC1BAD14-3330-4129-9ED0-CCFCFF967894 is "Defaults" regulated and can NOT download. Sequence 1806 vs AcceptRate 0. Any help is appreciated?

Proceed like that: Uninstall all MUI packs run chkdsk /r /f and sfc /scannow Disable all security softwares Download and install System Update Readiness tool for your OS Reset Windows Update components If this does not help, download SP1 and install it manually. If the problem persists, perform an in-place upgrade of your OS. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator

By any chance are you behind the proxy ? or a firewall ? If ye p;ease turn off the firewall and give a try and also check your proxy settingshttp://www.virmansec.com/blogs/skhairuddin

eror log suggest its a connection problem, possibly due to proxy. if you use one, take a look here: http://support.microsoft.com/kb/900935

We use ISA Proxy to connect to the internet.Is there any settings to configure in ISA to get updates in Server 2008R2

When we create anonymous access policy for windows update in ISA resolved this issue as mentioned in the below article. http://support.microsoft.com/kb/885819