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Can't play Netflix videos.

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I've tried most of the Netflix (website's) suggestions to troubleshoot why videos won't play with Firefox; none could fixed the issue. The only suggestion I did not try is to disable Private browsing mode simply because I don't know how to do it and Firefox Support does not specifically address this task. I've also tried the suggestions provided by various forum responders to this issue ... again, no fix! Can someone please provide specific instructions on how to disable Private browsing?

I'm tired of switching from FF to IE every time I want to watch a movie.

I've tried most of the Netflix (website's) suggestions to troubleshoot why videos won't play with Firefox; none could fixed the issue. The only suggestion I did not try is to disable Private browsing mode simply because I don't know how to do it and Firefox Support does not specifically address this task. I've also tried the suggestions provided by various forum responders to this issue ... again, no fix! Can someone please provide specific instructions on how to disable Private browsing? I'm tired of switching from FF to IE every time I want to watch a movie.

Chosen solution

Okay, on the Options/Preferences page --

  • Windows: "3-bar" menu button (or Tools menu) > Options
  • Mac: "3-bar" menu button (or Firefox menu) > Preferences
  • Linux: "3-bar" menu button (or Edit menu) > Preferences
  • Any system: type or paste about:preferences into the address bar and press Enter/Return to load it

In the left column, click Privacy & Security, then scroll down to the History section. Either of these will invoke automatic private browsing:

  • Firefox will: Never remember history
  • Firefox will: Use custom settings for history + "Always use private browsing mode"

Either change to:

  • Firefox will: Remember history
  • Firefox will: Use custom settings for history and UNCHECK "Always use private browsing mode"

Firefox will need to restart after that change.

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All Replies (6)

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Hi ConiV, what happens when you try to play a Netflix video? For example:

  • specific error code
  • black screen, nothing happening

Have you already turned off the Autoplay block or used the little icon toward the left end of the address bar to make a site exception? This article has more info: Allow or block media autoplay in Firefox.

Normally, Firefox saves history as you browse. Does your Firefox save history? You can check by pressing Ctrl+h to open the History sidebar. If it doesn't show pages you recently viewed, then you may be in a private window. What do you see?

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This is the Error Code: F7701-1003

My Firefox does not save History.

I referenced your provided link (TY) and there is NO special icon indicating Firefox is blocking Netflix playback. Also, in the Permissions section, Block websites from automatically playing sound is NOT checked.

I followed all the Netflix Help Center instructions except the one directing me to Disable Private Browsing. All my Firefox tabs open in Private Browsing and I can't find a way to disable it. How can I disable it?

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Chosen Solution

Okay, on the Options/Preferences page --

  • Windows: "3-bar" menu button (or Tools menu) > Options
  • Mac: "3-bar" menu button (or Firefox menu) > Preferences
  • Linux: "3-bar" menu button (or Edit menu) > Preferences
  • Any system: type or paste about:preferences into the address bar and press Enter/Return to load it

In the left column, click Privacy & Security, then scroll down to the History section. Either of these will invoke automatic private browsing:

  • Firefox will: Never remember history
  • Firefox will: Use custom settings for history + "Always use private browsing mode"

Either change to:

  • Firefox will: Remember history
  • Firefox will: Use custom settings for history and UNCHECK "Always use private browsing mode"

Firefox will need to restart after that change.

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I changed History to: Use custom settings and checked the Clear History when Firefox closes.

After doing so, I tried to play a Netflix video and received Error Code: F7361-1253, along with: "Netflix system requirements for HTML5 Player and Silverlight...."

I reloaded the page and enabled DRM, then tried a different video. The page refreshed several times and the video eventually played. Hopefully, this is a permanent fix.

Thank you so much for your help :-)

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I'm getting Netflix error code F7121-3078 netflix doesn't support browser I've updated Firefox and nothing works

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Hi assmonkey69, Netflix has the following article for "F7121-3078":

https://help.netflix.com/en/node/109144

Does that help? If not, what version of Firefox are you running?