WIndows (XP) Update error code 0x78F.

Windows Update has failed (code 0x78F) three times to install "Service Pack 2 for Microsoft Office 2010 (KB2687455) 32-Bit Edition". I can't run the diagnostics because of another problem (XP doesn't recognise a .diagcab  extension).  Can anyone please help me diagnose the problem myself.


Peter M



Question Info

Last updated March 26, 2018 Views 2,835 Applies to:
Monthly Security Bulletin will be found here


Microsoft Security Bulletin Summary    Latest Release


> Embedded Link to (latest) or (most recent) bulletin


should take you here for December bulletin


Scroll down the list "Bulletin Title and Executive Summary" looking for the update of interest which will be the


"cumulative security update for internet explorer"  plus a KB series number


On the left will be a Bulletin ID Number for this month


MS13-097   ( the MS ID number is an embedded link ) that will take you here


Scroll down the list looking for your version of internet explorer


( for IE8 ) this will be the linked page for the December update


and the download button may get you a password request and a browser download permission query which is in that navigation path


So the direct link for the file for December is


This direct download link was simply the embed link from the if your download does not start click "here"




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