Got problems playing your favorite Netflix movies in your favorite Firefox browser on your new favorite Windows 8 OS?

Here’s the answer:

  1. In your address bar of Firefox, type “about:config” which may give you a scary warning. If it does, just click that you accept the risks (this won’t break anything)
  2. Right click anywhere in the main browser window
  3. Select “new” and then “string”
  4. Type “general.useragent.override” for the preference name
  5. Type “Mozilla/5.0 (Windows NT 6.1; rv:13.0) Gecko/20100101 Firefox/13.0.1” for the value
  6. Go watch a movie!

Details of why this works after the jump.

By the steps, here’s what’s going on:

  1. “about:config” gives you special access to underlying bits of the Firefox browser. You can use it to do tweaking that isn’t in the options, such as changing the behavior and what appears in a new tab. There are many plugins that do nothing more than adjust these values for you.
  2. This just opens the menu to do things.
  3. Here you’re telling Firefox that you want to add something new to its behavior.
  4. This tells Firefox what to tell the sites you visit regarding the browser and OS you’re using.
  5. The first part says you’re using a Mozilla browser. The second part lies and says you’re using Windows 7 (Which is internally Windows NT 6.1). Gecko is the layout engine (how the browser decides to display pages). Firefox is the browser (and version) that you’re using.
  6. Netflix is now fooled into thinking you have a whitelisted (marked as okay) combination of things and allows videos to be streamed.


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