Hi, I have been trying to update my windows from past few months but every time i get a Failed Update infact windows just cant install the updates after downloading it. I keep getting the error codes 80070490 & 42B I even downloaded the windows update agent but it returned a error Windows Update Agent Installer encountered an unrecoverable error. I also downloaded the checksur Windows6.0 KB947821 v12-x86 and ran this file and it seemed pretty fine but still i dont know as to why the upgrade from SP1 to SP2 is unsuccessful as i keep getting the error that some components are missing and the code is 80070490. Frankly speaking i have tried every possible way to get the updates in place but in vain. Kindly Help.. P.S. : Am enclosing the update log in the next post as its too long to be posted here.