Every time I run my Windows Vista Anytime Upgrade disk to attempt to install Business Edition, I get a failure in copying Windows files. How do i contact Microsoft to replace the disk?
Maybe this site will help you out, though (the author walks you through the steps in this article "Discover Windows Anytime Upgrade--—the new way to upgrade Windows Vista")
http://windowshelp.microsoft.com/Windows/en-US/Help/5e11a941-0cc7-4052-bcda-27b1a72560d11033.mspx
Are you trying to upgrade an OEM edition of WinXP or a full retail version?
Some disks are only made for one computer.
If you got a Dell computer with Win XP and a Vista upgrade, the disk will only work on Dells.