Code 646 Windows has encountered an unknown error.

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• 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 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

• 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.

• 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

• Microsoft Update maintains did not give me the error code "646 windows update encountered an unknown error" __Help__Thanks in advance

  Windows Update continues to not give me an error code "0000646 Windows update encountered an unknown error.

  Hello

  Try this 1st to see if it helps, and it should:

  Description of the Patch registration cleanup tool
  http://support.Microsoft.com/kb/976220/

  ------------------------------------------------------

  If necessary :

  Try this - Panel - Windows Updates - on every update that will not be installed - click on the important updates
  or the update itself - double click a view more information (or click top then discovers on the right)

  Those who will take you to a page where you can download the update.

  Or go here and the KBxxxxxx number to download it.

  Download Center - mount the KBxxxxxx.

  Microsoft Download Center
  http://www.Microsoft.com/downloads/en/default.aspx

  Download - SAVE - go to where you put them - click on - RUN AS ADMIN

  Then you can right click on the update in the updates Windows and HIDE.

  If you get an error Installer install this version:

  Windows install 4.5 Redistributable
  http://www.Microsoft.com/downloads/details.aspx?FamilyId=5A58B56F-60B6-4412-95B9-54D056D6F9F4&displaylang=en

  ----------------------------------------------------

  Then run this:

  How to reset the Windows Update components? -a Mr Fixit
  http://support.Microsoft.com/kb/971058

  Description of the system for Windows Vista, Windows Server 2008, update tool and
  for Windows 7
  http://support.Microsoft.com/kb/947821

  ------------------------------------------------------------
  Because these are all Office updates you might get more information if necessary in the Agency of those groups that
  may have experienced the same problem.

  Office newsgroups
  http://www.Microsoft.com/Office/Community/en-us/FlyoutOverview.mspx

  Microsoft.public.office.misc discussions
  http://www.Microsoft.com/communities/newsgroups/list/en-us/default.aspx?DG=Microsoft.public.Office.misc&cat=en_us_01cb749f-c998-4762-8099-df71793c11c7&lang=en&CR=us

  ------------------------------------------------------------

  If necessary you can incident free get reports however the above should take care of it for you.

  Windows updates - free Incident report

  Go here and click on-> Windows Update fails while searching, downloading or installation of updates
  http://support.Microsoft.com/GP/wusupport#tab3

  The security updates, you can get free support Incident report
  http://www.Microsoft.com/protect/resources/support.aspx

  I hope this helps.
  Rob - bicycle - Mark Twain said it is good.

• Windows update fails with code 646 (Windows Update encountered an unknown error)

  Windows Update cannot succeed to install the updates related to microsoft office products. It says "Windows update has encountered an unknown error" and the error 646 code. How can I solve this problem?

  tayyarsen,

  Look here: http://support.microsoft.com/kb/2258121

• 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

• 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

• Code 646 Windows update encountered an unknown error

  Windows 7, you try to download windows updates and is currently blocked on KB2289158 and a KB2443839. Been trying for days to update and continue to fail.

  Can you suggest a method of compensation of this question and allowing updates to the OAB is taken into account.

  Thank you

  KB article: http://support.microsoft.com/kb/2258121 Kaylene Horne / TaurArian [MVP] 2005-2011. The information has been provided * being * with no guarantee or warranty.

• 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 Update has failed. "Error found: Code 8007001F Windows Update encountered an unknown error." _

  RALink - network - 802.11n/b/g Wireless LAN USB 2.0 Mini adapter 379ko

  Windows Update has failed. "Error found: Code 8007001F Windows Update encountered an unknown error."

  I bought a wifi USB adapter and it is a driver windows 7 available on the manufacturer's website. RALink

  http://eng.ralinktech.com.tw/support.php?s=1

  My computer is a HP P6110f desktop computer. It came with a Vista 64 OS which I've upgraded to a Windows 7 Home Premium.

  I tried to install all kinds of different ways but were not able to make it work.

  Disconnect all other devices driver/software uninstalled and reinstalled all plugging adapter in each computer startup I tried port USB with adapter connected and also connect after windows load discharged from all applications running, including firewall and anti-virus

  Can you please help me solve this problem? I consider myself quite computer but I'm completely puzzled here.

  http://social.answers.Microsoft.com/forums/en-us/category/Windows7
  Windows 7 discussion groups

  They may be able to help in obtaining the wifi USB adapter to work.

  8007001F (a device attached to the system is not functioning) TaurArian [MVP] 2005-2010-implementation to date of Services

• 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

• Code 57 Windows Update encountered an unknown error

  I constantly receive the following error message when you try to install the Windows updated to filter junk e-mail in Microsoft Office Outlook 2007 (KB979895).

  "Code 57 Windows Update encountered an unknown error"

  Please send me an email to * address email is removed from the privacy * if you know how to solve this problem.

  I tried disabling my firewall to install this update and antivirs but it has no effect.

  Tip: Insert your Office CD in the Bay before the next attempt to install appropriate.

  Tip: If no joy, see if you can download the "fullfile" version updates via http://www.microsoft.com/downloads/ or http://catalog.update.microsoft.com/ and then manually install / them.

  ~ 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

• Code 8E5E0147 Windows Update encountered an unknown error

  Hello

  
  

  Vista has got an automatic update every day for a few days ago but every time the update starts finally fails with this error: "'Code 8E5E0147 Windows Update encountered an unknown error" "

  
  

  What should I do? Vista Help did not help at all. I got the same error.

  
  

  Thank you.

  suiobo,
  Go to Microsoft's download page and select the download appropriate for your operating system, then save it on your PC.  Then, run the update from your PC and see if it will install manually.  If you still have the error and then perform a clean boot and test again.  Let us know the results.

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