1. Open your web browser and go to the Disney+ website.
2. Sign in to your Disney+ account.
3. In the search bar, type "Hanna Montana" and select the movie from the search results.
4. Click on the "Watch Now" button.
5. The movie will start playing in your browser.
You can also watch the Hanna Montana movie on the Disney+ app on your computer. To do this, follow these steps:
1. Download the Disney+ app from the Microsoft Store or the App Store.
2. Open the Disney+ app and sign in to your account.
3. In the search bar, type "Hanna Montana" and select the movie from the search results.
4. Click on the "Watch Now" button.
5. The movie will start playing on your computer.