Why does Windows Update say I’m missing a file when I try to install Windows 8.1 Update?

Anonymous April 20, 2014
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I’m having trouble installing the latest Windows 8.1Update. I get a different ‘missing file’ number each time I try.

  1. Hovsep A
    April 20, 2014 at 7:57 am

    Open Windows Update Center click View Update History, there is an option Troubleshoot Problems With Installing Updates.

    Error 0x80071a91 when installing update 2919355 in Windows
    http://support.microsoft.com/kb/2939087/en-us

    Windows 8.1 Update 1 Failing to Install with errors 80070020, 80073712 and 0x800f081f
    http://answers.microsoft.com/en-us/windows/forum/windows8_1-windows_update/windows-81-update-1-failing-to-install-with-errors/c3071122-e903-4775-b659-e98784bc786c?page=20
    try the solutions in this page