I had the same problem initially with a file from an "unauthorized" web
site (lessen here for everyone).
When I got it from Microsoft I had no such problem. I also used the
Microsoft File Transfer Manager which checks the download for competency
when the download has completed.
"Dracher" wrote in message
>
> First off let me say that I'm in a very rural area that only has dialup
> so getting an update of this size took me about 17 hours.
>
> I got the SP2 using the Updates and yet when I try to install it
> I get to "3 of 3" and gets to 100% but then stops there for a couple
> minutes and then gives me a message of:
>
> Service Pack Did Not Install. Reverting Changes
>
> I'm currently running Vista Home Basic with SP1.
>
>
> --
> Dracher
>> Stay informed about: Vista SP2 install problems