Important updates for Vista SP2 Security Installation failure: update MSXML 4.0 SP2 (KB927978) AND (KB954430) security, citing error Code 652, Windows Update encountered an unknown error!

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• I tried for weeks install windows updates and get this message error (s) found: code 80070645 windows has encountered an unknown error. How can I solve this problem?

  Windows Update
  Error (s) found: code 80070645 windows has encountered an unknown error.
  I had before the shock of two antivirus this proven system restoration started but no help.
  Fix it to charge microsoft, but has not helped any.

  How can we if this problem, so I can install the updates I need?

  Hi Wyattsdaddy,

  Thanks for posting your question.

  Step 1: Check if Windows update-related services are set to automatic and started.

  Click Start, type services.msc in the start search box, right-click to services.msc, and then click Run as administrator.

  Check the above services below:
  (a) Background Intelligent Transfer Service
  (b) cryptographic service
  (c) Windows Update

  Step 2: Rename the Catroot2 folder

  To rename the Catroot2 folder, follow these steps:

  1. Click Start, type cmd in the search box and right-click on cmd.exe, and then click Run as administrator.
  2. at the command prompt, type the following commands and press ENTER after each line:

  net stop cryptsvc
  Ren %systemroot%\System32\Catroot2 oldcatroot2
  net start cryptsvc
  output

  3 remove all tmp*.cat to the following folder:

  % systemroot%\system32\CatRoot\{F750E6C3-38EE-11D1-85E5-00C04FC295EE}

  If any of the files that begin with tmp exist in this folder, do not remove any other files. Files .cat in this folder are necessary for installing hotfixes and service packs.

  Important: Do not rename the folder C:\windows\system32\catroot. The Catroot2 folder is automatically recreated by Windows, but the C:\windows\system32\catroot folder is not recreated if is renamed the folder C:\windows\system32\catroot.

  Step 3: Reregister DLL files that are associated with Cryptographic Services

  To register .dll files that are associated with Cryptographic Services, follow these steps:

  1. Click Start, type cmd in the search box and right-click on cmd.exe, and then click Run as administrator.

  2. at the command prompt, type the following commands and press ENTER after each command:

  regsvr32 /u softpub.dll
  regsvr32 /u wintrust.dll
  regsvr32 /u initpki.dll
  regsvr32 /u dssenh.dll
  regsvr32 /u rsaenh.dll
  regsvr32 /u gpkcsp.dll
  regsvr32 /u sccbase.dll
  regsvr32 /u slbcsp.dll
  regsvr32 /u mssip32.dll
  regsvr32 /u cryptdlg.dll

  regsvr32 softpub.dll
  regsvr32 wintrust.dll
  regsvr32 initpki.dll
  regsvr32 dssenh.dll
  regsvr32 rsaenh.dll
  regsvr32 gpkcsp.dll
  regsvr32 sccbase.dll
  regsvr32 slbcsp.dll
  regsvr32 mssip32.dll
  regsvr32 cryptdlg.dll
  output

  Note: Click OK if prompted.

  Restart the computer.

  Step 4: Empty the software distribution folder

  1. Click Start, type services.msc in the search box, click services.msc, and then click Run as administrator.
  2. in the Services (Local) pane, click Automatic updates and then click on stop.
  3. reduce the Services (local) window.
  4. Select all the contents of the Windows distribution folder, and then delete them.

  Note: By default, the Windows distribution folder is located in the drive: \Windows\SoftwareDistribution folder. At this location, the drive is a placeholder for the drive where Windows is installed.
  5. make sure that the Windows distribution folder is empty, and then enlarge the Services (local) window.
  6. in the Services (Local) pane, click Automatic updates, and then click Start.
  7 restart the computer, and then run Windows Update again.

  Item appraised: http://support.Microsoft.com/default.aspx/KB/822798

  Step 5: Disable the security software
  Note: You can enable it later.
  Step 6: Scan Run SFC
  Please follow the steps below to the auditor of the filesystem as the first steps:

  1. Click Start and type cmd in the box start the search.
  2. in the area of results, right-click cmd.exe, and then click Run as administrator. You will be asked to type the password for an administrator account. If you are the administrator or type the administrator password, click on continue. Then click on continue.
  3. at the command prompt, type Sfc/scannow, and then press ENTER.

  Note: The analysis may take some time, so be patient. Windows allows to fix corrupt or missing files it finds. If the information of the installation CD is required to fix the problem, you may be asked to insert your Windows Vista CD.
  http://support.Microsoft.com/kb/949104/

  Step 7: Components to reset Windows Update
  http://support.Microsoft.com/kb/971058

  Let us know if that helps.

  Kind regards
  Clement Kumar.

  Microsoft Answers Support Engineer. Visit our Microsoft answers feedback Forum and let us know what you think.

• Windows update error - "Code 80070643 - Windows has encountered an unknown error"

  I am running windows Vista SP1 and for the past month, it does not install updates.

  My security software (ESET Smart Security 4) keeps telling me that my system is not up-to-date and when I check the windows update, I have accumulated lack updated for a month. Previously, they have updated very well, but I think the problem started when he tried to install windows vista service pack 2 and failed with an "unknown error".

  When I try to install the updates, Windows Update displays an error message saying that it has to update the version of the Windows Update software but when I click on continue, I get "Code 80070643 - Windows has encountered an unknown error. No updates are then installed.

  Office Source Engine setting to automatic, what I did, but that makes no difference, suggested the online help.

  Can anyone help?

  Thank you very much.

  I think the problem started when he tried to install windows vista service pack 2 and failed with an "unknown error".

  When I try to install the updates, Windows Update displays an error message saying that it has to update the version of the Windows Update software but...

  A1. Free unlimited installation and compatibility support is available for Windows Vista, but only for Service Pack 2 (SP2). This support, initially planned to end on November 26, 2009, has been extended until February 26, 2010. Availability of support chat or messaging differs depending on your location. Some questions may require that more support for which he is advanced a charge.  Go to http://support.microsoft.com/oas/default.aspx?prid=13014&gprid=582034 & select appropriate category (i.e., download problem;) Installation problem; Problems after installing a service pack).

  A2. See http://support.microsoft.com/kb/949104 or http://support.microsoft.com/kb/971058

  See also Windows update fails with error code 0 x 643 ~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

• Update error code 80246008 windows has encountered an unknown error

  IV recently corrected my windows update service, but I'm unable to install the important updates because I get an error code 80246008 windows has encountered an unknown error. I don't know what to do, ive tried microsoft solve this problem, iv also been on www.tweaking.com, I can't seem to find a solution, can anyone help?

  See the article below for more information and measures.

  Windows Update error 80246008

  http://Windows.Microsoft.com/en-us/Windows-Vista/Windows-Update-error-80246008

  UTC/GMT is 21:59 Sunday, September 9, 2012

• update code 646 windows has encountered an unknown error

  Hello, I can't install the update to windows and end up with the following error message code 646 windows update encountered an unknown error. so if anyone knows anything can you help me with instructions.

  See this thread:
  http://social.answers.Microsoft.com/forums/en-us/vistawu/thread/267bbf1c-0390-4034-AAB1-45f4a4c4559a/ TaurArian [MVP] 2005-2010 - Update Services

• Windows 7 - updated code c0000142 Windows has encountered an unknown error

  I need to know how resolve the error message "code c0000142 Windows Update has encountered an unknown error" my computer doesn't seem to if install updates for windows 7.  Windows defender updayes install OK, but not of windows7

  E-mail address is removed from the privacy *.

  HowManage , Configure and troubleshoot Windows updates releasing it's easy: with Windows | ActiveWin | Laptops | Microsoft MVP

• updates cannot be installed error code 80070002, windows has encountered an unknown error, on my pc with windows vista basic.

  updates cannot be installed onmy pc even after I tried to remove the temperory updates and also followed all the suggestion that is available in the help and support window.

  Hello, pramodec

  Please use the Forum for answers!

  Try running the Fix It tool on the link below and let us know the results: http://support.microsoft.com/kb/971058

  We can't wait to hear back on your part.

  David
  Microsoft Answers Support Engineer
  Visit our Microsoft answers feedback Forum and let us know what you think.

• Windows could not verify updates fo update error code 80070490 windows has encountered an unknown error. 3 months now!

  I can't do updates, internet Explorer crashes 3 - 4 times a day. Do not now how to fix this problem! Can anyone help please?

  http://support.Microsoft.com/kb/958044

  You receive an error code "0 x 80070490" when you use Microsoft Update or Windows Update Web sites to install updates

  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  Windows Update Forum:

  It comes with Vista, upgrade install and activate Forum.

  You will get the best help for any problem of Update/Service Pack in the Windows Update Forum; the link below:

  http://social.answers.Microsoft.com/forums/en-us/vistawu/threads

  When you repost here, kindly include the Error Codes, and exactly what is happening when you try to update.

  In this way, you will receive the best help.

  See you soon.

  Mick Murphy - Microsoft partner

• Windows Vista - Error Code: Windows Update encountered an unknown error

  When you use Windows Update on my computer the program informs me that there is an important update for my computer.  After clicking on the "install updates" button
  After that, he says:
  Update 1 of 1
  Microsoft. NET Framework 1.1 Service Pack 1 update for Windows.

  Then he informed me that the updates were not installed and comes up with:

  Update code 643 Windows has encountered an unknown error.

  I tried to manually install Service Pack 2 on the microsoft site as suggested in a convenience store for the errors that occur during updates, but this does not appear to have solved the problem.

  You can provide any assistance would be greatly appreciated.

  Step #1 => foremost, note what version of .NET Framework is installed:

  How to determine what version of the .NET Framework is installed and determine whether the service packs have been applied
  http://msdn.Microsoft.com/en-us/KB/kb00318785.aspx

  Step #2-online now see resolution method 2 in this related KB article: http://support.microsoft.com/kb/923100

  After running the cleaning of .NET Framework (not the Windows Installer Cleanup utility) tool, reinstall all the versions of the .NET Framework (but the ones you noted in #1 above) manually using the download links on the page, and then run Windows Update manually install security updates for same.

  NB: If you remove the .NET Framework 3.5 (SP1) by using the tool, reinstall .NET Framework 3.5 will also install .net Framework 2.0 SP2 and 3.0 SP2. Then, Windows Update will offer .NET Framework 3.5 SP1.

  IMPORTANT! =>, If you remove the .NET Framework 3.5 (SP1), reinstall your version of .NET Framework in the following order:

  1. the .net framework 3.5, then...
  2 .net framework 1.1, then...
  3 .net framework 1.1 SP1

  NB: KB923100 makes reference to this page: http://blogs.msdn.com/astebner/archive/2006/05/30/611355.aspx.  Please read ALL as well as the related http://blogs.msdn.com/astebner/pages/8904493.aspx before using the .NET Framework cleanup tool.

  Step #3 => Check-in at Windows Update and install the critical updates of security offered.

  
  PS: I think you have worse problems, Phil: http://social.answers.microsoft.com/Forums/en-US/vistawu/thread/856d02a2-837c-4e10-ad51-82039bf5c166
  ~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

• Error 800b0100 Windows Update encountered an unknown error when executing update security for Windows Vista (KB967723)

  Whenever Norton runs a scan of the live update I have the following message and am not sure how solve the problem - error 800b0100 Windows Update encountered an unknown error runtime security update for Windows Vista (KB967723). What can I do?

  Error message when you try to use Microsoft Update or Windows Update Web sites to install updates: "0x800B0100":
  http://support.Microsoft.com/kb/956702

  Visit the Microsoft Solution Center and antivirus security for resources and tools to keep your PC safe and healthy. If you have problems with the installation of the update itself, visit the Microsoft Update Support for resources and tools to keep your PC updated with the latest updates.

  ~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

• KB2585542 for vista SP2 is not listed in the microsoft updates

  Hello

  I have a Windows Vista Enterprise SP2 32 bit OS. where is installed without Microsoft Updates.
  When I ran/scan of Microsoft Updates, MS12-006 (2643584) from Jan 2012 recent PT in which KB2585542 for vista SP2 is not listed in microsoft updates.
  Y at - it an update to install before you get to the KB2585542 in the Microsoft updates.

  You will find appropriate support for Vista Enterprise in IT Pro forums-online http://social.technet.microsoft.com/Forums/en/category/windowsvistaitpro

• Windows Update, error 80072efd y at - it repair for vista sp2.

  I have a travel mate 5730 and when I tried to update I had Windows Update error 80072efd and have not found a repair for vista sp2

  See the below Microsoft article and try the steps mentioned and check if it works

  http://windowshelp.Microsoft.com/Windows/en-us/help/93b6ab71-8B21-4B50-B40E-abb80eba29271033.mspx>

  UTC/GMT is 15:23 Thursday, September 15, 2011

• Is no longer, I can download and install the updates for Vista SP2. I get error 80070490

  Original title: Windows of Vista SP2 update fails.  Vista Upgrade option grayed out

  Is no longer, I can download and install the updates for Vista SP2.  I get error 80070490, who reports that Vista Service Pack 1 is no longer up-to-date.  I downloaded and installed the "System Update Readiness Tool" without change in error.  Repair Vista with DVD does not give me the upgrade option.  My SP-2 is corrupt?  Vista Service Pack 2 also went out of support?

  Kind regards

  Ed S.

  Hello

  Method 1:

  Follow the steps in troubleshooting section and check if that helps.

  You receive an error code "0 x 80070490" when you use Microsoft Update or Windows Update Web sites to install updates

  http://support.Microsoft.com/kb/958044

  Method 2:

  You can also read this article and check if it helps.

  How to uninstall Windows Vista service packs as a troubleshooting step

  http://support.Microsoft.com/kb/948537

• Unable to update Windows Vista, Error code: 800B 001, "Windows has encountered an unknown error.

  Its been a while now that I can't download and update my Windows Vista Home Premium(64-bit), every time I click on install updates, it starts to download the updates, and when its done and the error occurs, code error: 800 B 001, "Windows has encountered an unknown error" and when when I try again... Error code: 80240016, "Windows update currently installed other updates. Please try again later in a few minutes. »
  I downloaded the update Windows Vista SP2 site Web Microsofts (Yes, im still in SP1), thinking it could slove the question, I can not install, when I clicked to install it, it says: "the form specified for the subject is not one supported or known by the specified trust provider."

  My Vista is genuine and activated, came with my laptop HP HDX16 1050EE.
  This issue has been hard for awhile and its a little boring.
  Thanks in advance.

  Applications, (Norton and McAfee) are notorious for not not upgrade (or uninstalling) itself. (No, Symantec Support never say this.) See if the following solves your problems:

  1. download the Norton Removal Tool, save it to your desktop: ftp://ftp.symantec.com/public/english_us_canada/removal_tools/Norton_Removal_Tool.exe

  2. close all open applications (that is, anything with an icon on the taskbar).

  3. After completing some you have a copy of your handy product key, uninstall all Norton software (including LiveUpdate and everything Norton Add ons) via Control Panel | Programs | Uninstall a program (or Control Panel |) Programs and features, if you are using the classic view).

  4 IMPORTANT! -Online activate Windows Firewall immediately after the restart.

  NB: Now you're "working without a net": no to ANYTHING else online (e.g., navigation, reading e-mail, chat) until you have completed step #7 below!

  5. right click on the file that you saved in step #1 above, and then select run as administrator.  DO TAP not your keyboard until the race ends, then restart.

  6. do a clean install of the 2010 version of your Norton application, using your product ID & reboot: http://www.symantec.com/norton/support/kb/web_view.jsp?wv_type=public_web&docurl=20080514162318EN

  TIP: Do not activate or install additional modules of Norton (for example, Norton Anti-Phishing) immediately.

  7. manually and repeatedly run LiveUpdate until you get a prompt "no update more".

  8 test cycle.

  NB: Your Norton application can disable Windows Defender by default.

  ~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

• I can't install the updates of Windows on Vista. Error code is that 80246008-Windows Update encountered an unknown error.

  I can't install the updates of Windows on Vista. Error code is that 80246008-Windows Update encountered an unknown error.  Help had two suggestions being to check to see if the Background Intelligent Transfer Service is running, and I don't have the service installed, it is the problem.  What should I do?

  Hi Nita,

  Thanks for posting your question in the Microsoft Community forums.

  The description of the problem, I see that you are unable to install Windows Update and receive the error code 80246008. I also see that the PIECES is not in services.

  I imagine the inconvenience that you are experiencing. We are here to help and guide you in the right direction.

  The 80246008 error code may occur if the (BITS) Background Intelligent Transfer Service is not started or is configured incorrectly.

  I suggest you try the procedure described in the article and see if it helps.

  Error message when you search for available updates on the Windows Update Web site or on the Microsoft Update Web site: "0 x 80246008.
  http://support.Microsoft.com/kb/956706

  Let us know the status of the issue after you perform the troubleshooting steps. If you need to get assistance or information about this problem with Windows Update, I'll be happy to help you. We, at tender Microsoft to excellence.