How can I play my movie? It's asking me to download quicktime and I already did... twice

Can you check something for me please? I'd like to try doing a "Run as administrator" on your iTunes.

Quit iTunes first.

In Computer, open Local Disk C: or whichever drive you have your program files installed on.

If you have a 32-bit Windows, open the "Program files" folder.

If you have a 64-bit Windows, open the "Program Files (x86)" folder.

Open the "iTunes" folder.

Right-click on the iTunes.exe file and select "run as administrator".

Can you play the movie without the QuickTime message now?