We need to make sure it's the iTunes version from Apple's website and not the one from the Microsoft Store. Again doing this once may sometimes help. 2Tap or click the Download itunes button. Try holding ctrl+shift as you launch iTunes so it opens in safe-mode. While iTunes is not a requirement to run Duet, it's likely some of the required drivers were not installed properly during Duet's installation process and iTunes can help with that. How to Install iTunes on a Windows 10 PC 1Crank up your favorite browser and head to iTunes.