More than one file for the exact same update?

[pcalvert]

I've been looking at lists of download links for post-SP3 updates and noticed something odd. There appears to be more than one file name (and download URL) for at least some Windows XP updates.

Here is one example:

528424 May 22  2008 windowsxp-kb946648-x86-enu_288da0ecf75b20e972ad58dba0a382173b548ec1.exe528424 May  2  2008 WindowsXP-KB946648-x86-ENU.exe

MD5: 227ab80b252b3a31657a1b34eef5f5dd

SHA1: 288da0ecf75b20e972ad58dba0a382173b548ec1

The above values are the same for both files, confirming that they are identical. Does anyone know why there are two files (and two download URLs) for the same update?

Phil

Edited June 1, 2014 by pcalvert

[Guest]

Ones a file that Windows Update/ Microsoft Update / Automatic Updates uses and the other one is from the Microsoft download center.

There's a 3rd naming method if you where to download the file from the Microsoft Update Catalog and maybe a 4th if you downloaded the monthly ISOs. 

[pcalvert]

Thanks for the explanation.

 

Phil

Edited June 5, 2014 by pcalvert