Updates that do not work... (66A error code): KB2518870 and KB2478663

original title: updates that do not work...

Hello! I try to install 2 updates for my Windows Vista and I have always this message: Code 66A Windows Update encountered an unknown error...  Can you help me?

Hi JoannieGrenier,

Thanks for posting your question in the Forum of responses of Micrsoft.

Follow the troubleshooting updates the steps described in this document to resolve the problem with the installation of .net Framework.

If your prefer assistance in French, see the message below:

Please select your language from the drop-down menu above to post your question in the language of your choice. The forum in which you've posted is for English only. If you can't find your language above, support for additional international sites options are by following the link below:

http://support.Microsoft.com/common/international.aspx

Tags: Windows

Similar Questions

  • My Windows telling me that he needs 11 updates. These updates consistently fail and the Microsoft fix did not work. Error codes are 641 and 80070641

    My Windows telling me that he needs 11 updates.  These consistenly updates fail and the Microsoft fix did not work.  Error codes are 641 and 80070641.

    Hello

    Did you change your computer before this problem?

    You can follow the suggestions and check out them.

    Method 1

    You can follow the procedure in the article.

    How to resolve problems connecting to Windows Update or Microsoft Update

    http://support.Microsoft.com/kb/818018

    Method 2

    You can reset the Windows Update components.

    Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following windows Help article.
    Back up the registry
    http://Windows.Microsoft.com/en-us/Windows7/back-up-the-registry

    How to reset the Windows Update components?

    http://support.Microsoft.com/kb/971058

    Method 3

    You can download and run the system update readiness tool.

    Description of the update tool of the system to Windows Vista, Windows Server 2008, Windows Server 2008 R2
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    Method 4

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    You can disable temporary of your security software.

    Disable the antivirus software

    http://Windows.Microsoft.com/en-us/Windows-Vista/disable-antivirus-software

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  • Windows Update does not work, get error 641, 80070641 and 8004FF01 on Vista Home Premium

    Windows Update does not work, get error 641, 80070641 and 8004FF01 on Vista Home Premium

    Hello!

    the mechanic system?
    It's what has helped us to

    Open Notepad.

    Copy the following into Notepad and save it as fixme.reg

       push all the files and then save it to your desktop.

    Windows Registry Editor Version 5.00

     

    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\msiserver]

    'DisplayName"="@%SystemRoot%\\system32\\msimsg.dll,-27 '.

    "ImagePath" = hex (2): 25, 00, 73, 00, 79, 00, 73, 00, 74, 00, 65, 00, 6 d, 00, 72, 00, 6f, 00, 6f, 00,------.

    74,00,25,00 5 C 00, 73, 00, 79, 00, 73, 00, 74, 00, 65, 00, 6 D, 00, 33, 00, 32, 00, 5 C, 00, 6 D,------.

    00,73,00,69,00,65,00,78,00,65,00,63,00,20,00, 2f, 56, 00, 00, 00, 00

    'Description"="@%SystemRoot%\\system32\\msimsg.dll,-32 '.

    "LocalSystem ObjectName"=""

    "ErrorControl" = DWORD: 00000001

    "Start" = dword:00000003

    'Type' = dword:00000010

    "DependOnService" = hex (7): 72, 00, 70, 00, 63, 00, 73, 00, 73, 00, 00, 00, 00, 00

    "ServiceSidType" = DWORD: 00000001

    "RequiredPrivileges" is hex (7): 53, 00, 65, 00, 54, 00, 63, 00 62 00, 50, 00, 72, 00, 69, 00, 76,------.

    00,69,00 6 C 00, 65, 00, 67, 00, 65, 00, 00, 00, 53, 00, 65, 00, 43, 00, 72, 00, 65, 00, 61, 00,------.

    74,00,65,00,50,00,61,00,67,00,65,00,66,00,69,00, 6 C, 00, 65, 00, 50, 00, 72, 00, 69,--------.

    00,76,00,69,00 6 c 00, 65, 00, 67, 00, 65, 00, 00, 00, 53, 00, 65, 00, 4 c, 00, 6f 00, 63, 00,------.

    6B, 00, 4 d, 00, 65, 00, 6 d, 00, 6f, 00, 72, 00, 79, 00, 50, 00, 72, 00, 69, 00, 76, 00, 69, 00, 6 c,

    00,65,00,67,00,65,00,00,00,53,00,65,00,49,00, 6F, 00, 63, 00, 72, 00, 65, 00, 61, 00,------.

    73,00,65,00,42,00,61,00,73,00,65,00,50,00,72,00,69,00, 6f, 00, 72, 00, 69, 00, 74,------.

    00,79,00,50,00,72,00,69,00,76,00,69,00 6 C 00, 65, 00, 67, 00, 65, 00, 00, 00, 53, 00,------.

    65,00,43,00,72,00,65,00,61,00,74,00,65,00,50,00,65,00,72,00, 6 d, 00, 61, 00, 6e,------.

    00,65,00, 6F, 00, 74, 00, 50, 00, 72, 00, 69, 00, 76, 00, 69, 00, 6 C, 00, 65, 00, 67, 00, 65, 00,------.

    00,00,53,00,65,00,41,00,75,00,64,00,69,00,74,00,50,00,72,00,69,00,76,00,69,------.

    00, 6 C, 00, 65, 00, 67, 00, 65, 00, 00, 00, 53, 00, 65, 00, 53, 00, 65, 00, 63, 00, 75, 00, 72, 00,------.

    69,00,74,00,79,00,50,00,72,00,69,00,76,00,69,00, 6 C, 00, 65, 00, 67, 00, 65, 00, 00,------.

    00,53,00,65,00,43,00,68,00,61,00, 6F, 00, 00, 65, 67, 00, 4F, 00, 6f, 00, 00, 69, 74, 00,------.

    66,00,79,00,50,00,72,00,69,00,76,00,69,00 6 C 00, 65, 00, 67, 00, 65, 00, 00, 00, 53,------.

    00,65,00,50,00,72,00, 6f, 66, 00, 00, 69, 00, 6 c, 00, 65, 00, 53, 69, 00, 00, 6F, 00, 67, 00,------.

    6 c, 00, 65, 00, 50, 00, 72, 00, 6f, 00, 63, 00, 65, 00, 73, 00, 73, 00, 50, 00, 72, 00, 69, 00, 76,------.

    00,69,00, 6 C, 00, 65, 00, 67, 00, 65, 00, 00, 00, 53, 00, 65, 00, 49, 00, 6 D, 00, 00, 65, 70, 00,------.

    72,00,73,00, 6f, 00, 6F, 00, 61, 00, 74, 00, 65, 00, 50, 00, 72, 00, 69, 00, 76, 00, 69, 00, 6 c,

    00,65,00,67,00,65,00,00,00,53,00,65,00,43,00,72,00,65,00,61,00,74,00,65,00,------.

    47.00, 6 c, 00, 6f, 00, 62, 00, 61, 00, 6 c, 00, 50, 00, 72, 00, 69, 00, 76, 00, 69, 00, 6 c, 00, 65,.

    00,67,00,65,00,00,00,53,00,65,00,41,00,73,00,73,00,69,00,67,00, 6F, 00, 50, 00,------.

    72,00,69,00, 6 d, 00, 61, 00, 72, 00, 79, 00, 54, 00, 6f, 00, 6 b, 65, 00, 00, 6F, 00, 00, 50, 72,------.

    00,69,00,76,00,69,00 6 C 00, 65, 00, 67, 00, 65, 00, 00, 00, 53, 00, 65, 00, 52, 00, 65, 00,------.

    73,00,74,00, 6f, 00, 72, 00, 65, 50, 00, 00, 72, 00, 69, 00, 76, 00, 69, 00, 6 c, 00 65 00, 67,.

    00,65,00,00,00,53,00,65,00,49,00, 6F, 00, 63, 00, 72, 00, 65, 00, 61, 00, 73, 00, 65, 00,------.

    51,00,75,00, 6f, 00, 74, 00, 61, 50, 00, 00, 72, 00, 69, 00, 76, 00, 69, 00, 6 c, 00 65 00, 67,.

    00,65,00,00,00,53,00,65,00,53,00,68,00,75,00,74,00,64,00, 6f, 77, 00, 00, 6F, 00,------.

    50,00,72,00,69,00,76,00,69,00 6 C 00, 65, 00, 67, 00, 65, 00, 00, 00, 53, 00, 65, 00, 54,------.

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    50,00,72,00,69,00,76,00,69,00, 6 C, 00, 65, 00, 67, 00, 65, 00, 00, 00, 53, 00, 65, 00, 4 C,

    00, 6f, 00, 61, 00, 64, 00, 44, 00, 72, 00, 69, 00, 76, 00, 65, 00, 72, 00, 50, 00, 72, 00, 69, 00,------.

    76,00,69,00, 6 c, 00, 65, 00, 67, 00, 65, 00, 00, 00, 53, 00, 65, 00, 42, 00, 61, 00, 63, 00, 6 b------.

    00,75,00,70,00,50,00,72,00,69,00,76,00,69,00 6 C 00, 65, 00, 67, 00, 65, 00, 00, 00,------.

    00.00

    "FailureActions" = hex: 84, 03, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 03, 00, 00, 00, 14, 00, 00,------.

    00,01,00,00,00, c0, d4, 01, 00, 01, 00, 00, 00, e0, 93, 04, 00, 00, 00, 00, 00, 00, 00, 00, 00

    Go to your desktop and double-click the file name fixme.reg

    Restart the PC and try to install the updates again

    or

    Click Start.

    Type regedit in the search field and press to enter.

    On the registry change windows click on file and select import.

    Navigate to the location where the fixme.reg file and select the file.

    Click ok on the windows screen once the registry is merged successfully.

    Restart computer and check if updates installs.

    * We had system mechanic and I uninstalled it since I discovered that it corrupted my windows installer.

    Hope this helps

    Microsoft KB article

    http://support.Microsoft.com/kb/2642495

    Thank you!

    Makoi

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