Things You'll Need
Instructions
Navigate to Netflix.com and click the "Member Sign In" tab on the top-right region of the site.
Enter your email and password in the corresponding fields and click "Continue" to log in to your Netflix account.
Click on the "Your Account &Help" link displayed on the upper-right corner of the window.
Click the "Manage Netflix Ready Devices and Computers" link displayed in the "Watching Instantly on Your TV or Computer" section. A list displays of all the devices you have added to your Netflix account. Find the device that says "Xbox 360" and click the "Deactivate" tab located beside it. Your Netflix account is logged out of your Xbox 360 console.