How to Fix Netflix Error N8156-4001 and Silverlight on Mac OS X

Jan 21
2011

This will be a short post in effort to help others. I was streaming Netflix tonight, or attempting to, and kept getting an error code N8156-4001 with a message to call support if it doesn’t go away. This was not a happy good feeling, nor was I going to call customer support – I’m far too lazy to wait in line.

So, I did a little research and found tons of others experiencing the same problem, and that it’s related to the Microsoft Silverlight Plugin. I found that many people said re-installing or downgrading Silverlight was doing the trick. Though I couldn’t find just how to do that as they rarely posted instructions for Mac OS X, hence this post.

The steps I finally came up with are dirt simple and hopefully work for others too. I’m not sure what remnants I left on my computer by installing over top like this, but frankly, I could care less – it works! :-)

The steps:

  1. Go to the Apple Silverlight download page, and download Silverlight 3.
    http://www.apple.com/downloads/macosx/development_tools/silverlight.html
  2. Unpackage the download
  3. Click through the friendly wizard
  4. Restart firefox

Wallah! I logged back into Netflix, and the error was gone. I’m now about to fall asleep to a sci-fi.

If others have tips, please post in the comments.

4 Responses to “How to Fix Netflix Error N8156-4001 and Silverlight on Mac OS X”

  1. Executive says:

    do a computer search for Silverlight, find any folders and deleete it,, if it wont delete, then go inside the silverlight folder and delete each other folder one by one,,

    then after you have deleted all Silverlight folders, download ccleaner (its free) and uninstall silverlight with it,

    then download and do a fresh install of silverlight and you should be able to view netflix again,

    remember to reboot.

  2. Danny221 says:

    hey man, having the same issue but I can't find an old version of silverlight.  Your link redirects to the App store ads on apple's website.  Anywhere else I might find it?

  3. Danny221 says:

    hey man, having the same issue but I can't find an old version of silverlight.  Your link redirects to the App store ads on apple's website.  Anywhere else I might find it?

  4. Tsavaris4 says:

    Hi – It appears they have remove the 'macosx' directory of the apple website. Is there an equivalent Apple provides?  This link above appears to be no longer valid?

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