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

After the update to firefox 29.0 microsoft silverlight used for watching netflix no longer works

  • 5 replies
  • 6 have this problem
  • 4 views
  • Last reply by cor-el

more options

updated to the latest firefox 29.0 on wed and immediately microsoft silverlight no longer works with firefox when trying to watch netflix. I have tried completely uninstalling and reinstalling silverlight to no avail.

updated to the latest firefox 29.0 on wed and immediately microsoft silverlight no longer works with firefox when trying to watch netflix. I have tried completely uninstalling and reinstalling silverlight to no avail.

All Replies (5)

more options

Can you try to start Firefox in Safe Mode to see if Firefox works properly with no error? You can start Firefox in Safe Mode below:

  • Windows/Mac: Go to Help > Restart with add-ons disabled
  • Linux: Run firefox -safe-mode in the Terminal/Konsole

If Firefox opens up fine with no problems, it's probably one of your extensions that's causing the issue. You can re-enable your add-ons one by one until you find the one that causes the issue upon being re-enabled.

more options

no change whatsoever when starting with add-ons disabled and in safe mode. opens the netflix website just fine but when you go to play any netflix video says there is a error with silverlight. I also tried uninstalling and reinstalling with the add-ons disabled to the same effect.

more options

Error Code: 2103

more options

the only thing thats changed is the firefox update... i was watching netflix right before the update and immediately after the update when i reopened my browser netflix no longer functioned... and i either get the above error code or just a generic silverlight encountered a problem please reload to try again.

more options

Silverlight shows as Version 5.3.1.18536 in the System Details list.

If you use extensions (Firefox/Tools > Add-ons > Extensions) that can block content (e.g. Adblock Plus, NoScript, Flash Block, Ghostery) then make sure that such extensions aren't blocking content.