Okay, it's been nearly two days since I did a clean installation of Windows Vista Ultimate (x64 version), I installed most of the updates from the Windows Update applet. But, I ran into problems trying to install the remaining 15 updates listed below: I get a error code 80070490: Windows Update encountered an unknown error. However, this eventually means that the CBS Manifest file that is needed to install updates is corrupt. I've noticed that some users even receive the 80070490 error code when trying to reinstall/repair Windows or perform a factory reset. As I may have to manually download the files listed above and determine if it will work correctly on this machine or not, iIs there a way to get around this error? Update: To get around this, I had to manually download each of the files individually to get around the 80070490 error. The error may re-appear when Microsoft issues the next round of updates on Patch Tuesday in more than a week from today.