iTunes for Windows: "You must purchase a new QuickTime Pro key to regain QuickTime Pro functionality" Message
A new QuickTime Pro key will be required if you're installing over QuickTime Pro.
Products Affected
QuickTime, iTunes
Symptom
When you install QuickTime or iTunes for Windows, these messages appear:
Solution
Take advantage of all the great features of QuickTime Pro and buy an upgrade from the QuickTime website, or the Apple Store. You can continue the installation without purchasing a QuickTime Pro key, but you will no longer have access to the QuickTime Pro features.
Note: If you cancel the installation, you will not be able to use iTunes, the iTunes Store, or any of the other features of QuickTime, including MPEG-4 video and AAC audio.
When you install QuickTime or iTunes for Windows, these messages appear:
- "An older version of QuickTime Pro was detected on this machine. If you proceed with this installation you must purchase a new QuickTime Pro key to regain QuickTime Pro functionality." (Figure 1)

Figure 1 Warning message
- "Are you sure you want to proceed with the installation of QuickTime?" (Figure 2)

Figure 2 Confirmation of installation
Solution
Take advantage of all the great features of QuickTime Pro and buy an upgrade from the QuickTime website, or the Apple Store. You can continue the installation without purchasing a QuickTime Pro key, but you will no longer have access to the QuickTime Pro features.
Note: If you cancel the installation, you will not be able to use iTunes, the iTunes Store, or any of the other features of QuickTime, including MPEG-4 video and AAC audio.