Why i can't install Security Update for Windows XP (KB975558) on my PC???

Read this:
http://answers.microsoft.com/en-us/windows/forum/windows_xp-windows_update/kb2686509-repeatedly-fails-with-error-code/0deeacb6-115c-419d-ac37-03ff8927b79c

And this:
http://support.microsoft.com/kb/2686509

Then run this to automatically fix it:
http://download.microsoft.com/download/E/E/E/EEEAE5AD-4B3B-4AEC-B22F-97658CB01F3A/MicrosoftFixit50882.msi

Check this answer at answers.microsoft... it may be as simple as turning off your antivirus while installing these update. You may also try the installation in Safe-mode.

> Windows XP SP3

This is "Service Pack" (a large collection of security-fixes) number 3, to update Microsoft Windows XP (not Vista, not 7). Just install it, and then access http://WindowsUpdate.Microsoft.com to get all "post-SP3" security-fixes -- this could be around 100(!) fixes, since SP3 was released, a few years ago.

There are a few options to try in this Microsoft Support page:

http://support.microsoft.com/kb/975558/

Pay special attention to the VERSION NUMBER of the files mentioned in that page, comparing them to the ones you ave in your machine.

Hope this info may help you!

The Microsoft "Service Pack 2" is just a collection of program-updates and security-fixes for either the "original" Windows XP, or for Windows XP with Service Pack 1 already applied.

As such, it does _NOT_ require any "key".

Note that it's probable that Service Pack 2 will _NOT_ install on a "bootleg" version of Windows XP (original or SP1), because the SP2 update includes the Microsoft "Windows Genuine Advantage" update.

kaspersky internet security 2010 cannot update my pc

perform a microsoft update, this will install SP2 and then you can finish installing Norton


regards

Does windows always have this problem? I think it can be fixed through a <a href="http://www.pcaholic.com"> computer check up</a>. Might want to have a good look at the website <a href="http://www.pcaholic.com"> http://www.pcaholic.com</a>.

Download from this link service pack 3

Why don't you try using this website, Reimage.com - its mainly for power users and PC repair professionals.