Downloading the full installation file and the updates can solve some problems. Office updates sometimes can fail if the update files are looking for the original installation source files of the Office Product.This type of startup is known as “clean boot”. What is “clean boot”? In order to troubleshoot error messages and other issues you can start your Windows OS (Vista/7/8) by using minimal set of drivers and startup programs. Check whether you are running 32-bit or 64-bit version of Office 2010.Links are already given in my earlier post.
Download the Office 2010 SP2 update manually from the Microsoft page.Suppose the KB2687455 update fails then you can follow this process. One user found 4 registry commands to implement in fixing this problem in the concerned knowledge article. You can apply the Microsoft Automatic Fix (Mr.Fix) for Office products upgrade. If you are on Windows XP and failed to do this update, you can do a few things before doing the last solution.
