This issue can be fixed by following these steps. IT worked for me!!
go to start menu --> run
type regedit, press enter
go to computer/hkey_classes_root/
find pcast and right click it
during the course of this you may get a message saying you cant change
anything, but you can change who can change things. click ok on it.
click advanced, then owner tab
change the owner from administrator to whatever name you are using
click ok twice to get out of the pop-ups completely
right click pcast again
click OWNER RIGHTS
by full control and read click the allow boxes.
> I've upgrade to last iTunes vers.
> Since that, each time I start iTunes the Windows configure again the
> program. After this it works well.
> I've reinstal several times, and clear registry with ccleaner, but I can't
> solve this.
> iTunes 126.96.36.199 vers.
> Any help?