This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Silverlight won't work in FF4.0, cant stream movies from Netflix. SL works ok in IE 7.0 What is wrong with FF??

  • 1 cavab
  • 75 have this problem
  • 25 views
  • Last reply by osbornla

more options

I used FF to stream movies from Netflix until Dec2010. I have updated to FF 4.0 and now I can't down stream Netflix movies. I get an error from Netflix that says Silverlight is not working and must reinstall.

BUT......Netflix and Silverlight works fine with IE 7.0 What happened to FF4.0..and Silverlight??

I used FF to stream movies from Netflix until Dec2010. I have updated to FF 4.0 and now I can't down stream Netflix movies. I get an error from Netflix that says Silverlight is not working and must reinstall. BUT......Netflix and Silverlight works fine with IE 7.0 What happened to FF4.0..and Silverlight??

All Replies (1)

more options

I just updated to the new Firefox and it wouldn't stream my Netflix movies. I was getting an error code related to Silverlight. I called Netflix and they had me enable my history and that fixed the problem. Their tech support, said the history/cookies must be enabled to stream movies. Hope this helps! (I also followed the prompt on the screen from Netflix with this error code to delete my old saved certificates, etc.)