Upgrading and/or updating can mean many things.
You have not provided enough information to do problem analysis.
Is the existing OS activated?
Are you installing from a genuine Microsoft DVD? an iso image? files copied to another volume?
All versions of Vista are on the distribution DVD.
The product key determines what features get installed.
My only suggestion is that OEM versions of of the OS may not contain everything that a retail version does.
Where did the upgrade come from? Is it just a product key?
Upgrading in place from 32 bit to 64 bit is not possible. It requires a clean install.
Sorry I can't be more help. I've never seen this problem before.
I suggest you open an installation support case with Microsoft.