jaugustine wrote:

A friend has WinXP Pro SP2 on his PC. He searched the web for SP3 for
his version of WinXP. He asked me for help. Note: I have WinXP Home
Edition SP2.

Does anyone know a site where he can download SP3 for WinXP Pro?

Ah, a "friend" who has WinXP SP-2 ... and you also with WinXP SP-2. ;-
Surely you are not the friend. (I know, stop calling you Shirley.)

https://www.google.com/search?q=wind...p-3%20download

2nd result points to:

https://support.microsoft.com/en-us/...ice-pack-3-sp3

but the link to the download gives a page reporting "We're sorry, this
download is no longer available." Well, you and your friend already
knew that Microsoft dropped support for Windows XP quite a while ago
(extended support ended back on April 8, 2014).

Searching online yields download candidates but from non-Microsoft
sites; e.g., https://windows-xp-service-pack-3.en.softonic.com/,
https://windows-xp-service-pack-3.soft32.com/ (and, yep, found using an
online search on "service pack 3 windows xp rtm network installation").