[SOLUTION] iTunes 10 – Windows installer has set policies to prevent installation

I was working with a client that couldn’t install iTunes 10 today on Vista Home Premium SP2.  It would pop up a message early in the install process saying, “Windows installer has set policies to prevent installation.”

I visited this blog, which had good advice, but none of it worked.

However, in the comments of that blog, sunny wrote that right-clicking and clicking “Run as Administrator” on the iTunes installation file worked.  It worked for me, too.