Once you have downloaded and opened Quickflix on the Xbox One, follow the below steps to sign in.
- Select "Sign in to Quickflix" from the settings menu or from any Movie or TV episode page.
- Enter your Quickflix Username (your email address) and password and select log in.
- After you have entered your Quickflix account details once, they will be associated with your Xbox profile and you will not need to re-enter them the next time you use the Quickflix app with the same Xbox profile.
If you wish to sign out of the Quixkflix app on Xbox One, you can do so at any point in the Settings menu.