In a Dell Optiplex GX620 running windows XP SP2 Spanish languaje, when I run the Kb917425 secutiry patch provided by Microsoft, I receive the error message saying that the patch is not intended for the selected OS version.

 

The same patch works fine in a similar machine (Dell optiplex GX620) which the Original OS was replaced by the normal microsoft version. I understand that Dell customizes the OSs, so, Do I have to replace the Original OS in all machines in order to apply such a patch?

 

Alfonso