za sta sluzi ovaj update Microsoft Office File Validation Add-in znam da je za microsoft office ali da li je bezbjedno da ga instaliram da nije za validnost  Microsoft Office.

Dobro si predpostavio, za proveru legalnosti Office paketa 

Ja sam ga instalirao ali office jos radi  mogu li kako da provjerim da li je office jos uvjek aktivan koristom Office 2003

jesi li restartovao komp?

jesam

windows 7 ili xp ? (KB 2501584) ?

windows 7

ako je update (KB 2501584) onda neces imati problema osim mozda ako otvaras velike excel fajlove. ako ipak zelis iz nekog razloga da disable-ujes :

To prevent Office File Validation from validating files you must create the following registry key and assign it a value of “0” for the specified application in Office 2003 or Office 2007:

HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\<11.0 or 12.0>\<application>\Security\FileValidation, where <11.0 or 12.0> represents the version of and where <application> represents the specific application for which Office File Validation is installed, such as , , and .

All necessary parameters for configuring the registry key are listed as follows:

    Value: EnableOnLoad

    Type: REG_DWORD

    Default: 2

    Description: Disable Office File Validation

    0 = Don’t validate

    1 = Validate

    2 = Validate unless called via object model

Ne pise  (KB 2501584) samo  Microsoft Office File Validation Add-in nema nikakve oznake kao na druge updateove.

Verovatno je taj. U svakom slucaju update ne proverava da li imas pirata nego treba da te zastiti od hakerskih napada tako sto proverava binarne kodove pre otvaranja fajlova