From: PA Bear [MS-MVP] on
See the Known Issues section ("This problem can occur if the file is
saved to a network location and then configured as a shared workbook")
~PA Bear, posted via Google Groups

On Mar 11, 8:26 am, Bruce <u...(a)> wrote:
> Hello -- I'm running Windows 2000, MS Office 2003 Professional, and Office Compatibility Pack. My system has been running quite stable.  In conducting the March Microsoft Updates, it updated with the following files:
> Security Update for the 2007 Microsoft Office System (KB978380)
> Update for the 2007 Microsoft Office System (KB977724)
> Update for Microsoft Office Outlook 2003 Junk Email Filter (KB979771)
> Security Update for Microsoft Office Excel 2003 (KB978474)
> Windows Malicious Software Removal Tool - March 2010 (KB890830)
> After conducting this update, I find that when I attempt to open a .docx file, I get "There was an error opening the file." error message.  I went into Add/Remove Programs in Control Panel, but was unable to find KB977724 listed.  I tried removing the Office 2007 Compatibility Pack and downloading it/installing it fresh, but to no avail.