Today, like everyone else (with an iPhone) I knew that the new firmware was available (version 2.1), so i fired up my iTunes and got prompted that a new version of iTunes was also available (version 8.0.0.35) and being the sucker that I am I downloaded and upgraded that also. To my amazement after being prompted to restart (the third time) I figured that something was wrong, besides me trying to Apple software on a PC!

Every time I started my iTunes I would be prompted with;

“Please wait while Windows configures iTunes”

and then to be prompted to restart, again (and again, and again)

Appartently and unbenounced to me Vista has a difficult time dealing with upgrading software and then craps out on updating the registry.

Lucky for your iTunes problem there is a very quick fix just…

1. go to start menu –> run (or WIN-R for all you keyboard shortcut fans)
2. type regedit
3. press enter
4. go to computer/hkey_classes_root/
5. find pcast and right click it
6. click permissions
   during the course of this you may get a message saying you cant change anything, but you can change who can change things.
7. click ok on it.
8. click advanced, then owner tab
9. change the owner from administrator to whatever name you are using
10. click ok twice to get out of the pop-ups completely
11. right click pcast again
12. click permissions
13. click OWNER RIGHTS
14. click the allow checkboxs by full control and read.
15. click ok

Now you should be able to upgrade iTunes to the latest version (version 8.0.0.35) and then upgrade your iPhone to the latest version (version 2.1)