Update failure for .NET / error 0x80070663

Discussion in 'Windows Update' started by baofulin, Nov 5, 2009.

  1. baofulin

    baofulin Guest

    My laptop running Windows XP SP3 is configured to automatically install
    updates. For quite some time now, Windows Update is trying to install an
    update to .NET each time i shut down. Each time it fails.

    Depending on something random (lunar phase? weekday?) that's either update
    KB974417 or KB951847. Update for KB951847 always fails with error code
    0x80070663, KB974417 fails with error code 0x645.

    To me both updates look almost the same, so no idea why Windows Update
    should chose one or the other or actually chose to install both.

    No idea if this is related, but might well be the case: Some weeks ago
    automatic update failed, because the hard drive was full to the last kilobyte
    (hadn't done a clean up for a while). That time Windows couldn't shut down
    and obviously also couldn't start up again after the hard reset I had to
    execute. The system is fine now, except for this annoying behaviour with
    Windows Update. I suspect there's still a corrupt file stored somewhere that
    Windows Update refuses to download again.
     
    baofulin, Nov 5, 2009
    #1
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  2. When installing updates using Windows update or Microsoft Update you may
    receive Error 0x643 or 0x80070643 (23 Oct-09)
    http://support.microsoft.com/kb/976982

    =====================

    Step #1 => Before doing anything else, write down what .NET Framework
    versions are currently installed:

    How to determine which versions of the .NET Framework are installed and
    whether service packs have been applied
    http://support.microsoft.com/kb/318785

    Step #2 => Now see Resolution Method 2 in...

    When you try to install an update for the .NET Framework 1.0, 1.1, 2.0, 3.0,
    or 3.5, you may receive Windows Update error code "0x643" or Windows
    Installer error code "1603" (ignore the title, if need be)
    http://support.microsoft.com/kb/923100

    After running the appropriate/needed tool, (re)install all .NET Framework
    versions (but only the ones you wrote down in #1 above) manually using the
    download links on the page then run Windows Update manually to install
    security updates for same.

    NB: If you remove .NET Framework 3.5 SP1 using the tool, reinstalling .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 .NET Framework 3.5 SP1, reinstall your .NET
    Framework versions in the following order:

    1. .Net Framework 3.5, then...
    2. .Net Framework 1.1, then...
    3. .Net Framework 1.1 SP1

    NB: KB923100 references this page:
    http://blogs.msdn.com/astebner/archive/2006/05/30/611355.aspx. Please read
    ALL of it as well as the related page
    http://blogs.msdn.com/astebner/pages/8904493.aspx before using the .NET
    Framework Cleanup Tool.

    Step #3 => Check-in at Windows Update and install any critical security
    updates offered.
     
    PA Bear [MS MVP], Nov 5, 2009
    #2
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