Windows Genuine Advantage Notifications notifies you if a copy of Microsoft Windows XP is not genuine. The notification messages are displayed only on computers that have failed the Windows Genuine Advantage validation process and that are running a copy of Windows XP that is not genuine. If you are running a validated, genuine copy of Windows XP, you will not receive notification messages.
So you don't really need to get this update if you have a genuine copy of windows.
If you downloaded any program, IE: Windows Defender, MS does a check to confirm your copy is legit. This is stored on the system. So your system is identified later on as having been confirmed as being a genuine copy of Windows for future updates and downloads.
Just my opinion others may disagree).
Having said all that i have downloaded and installed this update and have had no detrimental effects from it,so there may be a simpler solution that simply not installing the update.