Windows 10: Firefox can't stream Netflix after Windows update KB4464218

Greetings,


I am using Windows 10 Pro 32-bit, Firefox Version 62.0.3 Build ID 20181001155545 (latest version and updated)


After Windows installed updates I can't watch videos on Netflix (all videos) only, YouTube works just fine. I searched for the Netflix error and found that it says it's typically related to the browser.

Netflix Error M7121-1331


I knew nothing else with the computer changed except Windows Updates so I uninstalled that update KB4464218 and rebooted. Problem Solved!


The problem is that this is an important Windows Update and it keeps getting reinstalled automatically, and then the problem comes back with Netflix, and I have to go in and uninstall it again.


I posted this over on the Mozilla community support and got a response that this isn't an issue with the browser and the issue is with Windows. So this is why I'm posting it here.


Thanks in advance for any advice.

:)

 

Netflix does not stream readily

Hi Jack,

For better assistance, we'd like to know the following:

• Were there any changes made to your computer prior to this issue?
• Are you encountering the same issue using other browsers?
  
• What websites usually don't stream on Microsoft Edge and Internet Explorer?
• Are you getting an error when streaming on Microsoft Edge, Internet Explorer, and Netflix app?

We're looking forward to your reply.

 

Netflix

Hi Marshall3,

There could be a number of factors as to why you are having issues launching the Netflix app. This could be caused by a software conflict or due to an issue with the application itself.

I suggest that you reset your Netflix application by following the steps provided below:

• Go to Settings > Apps > Apps & Features.
  
• Click the Netflix app from the list and then choose Advanced options.
  
• Click Reset.

If the issue persists, you can consider uninstalling and reinstalling the device. To uninstall, follow these steps:

• Go to Settings > Apps > Apps & Features.
  
• Click the Netflix app from the list and then choose Uninstall.

Let us know how it goes and we'll assist you further if needed.

 

Netflix and Windows 10 .

Hi Nishkaam,

There's a possibility that the firewall or antivirus software on your computer is blocking the access to Netflix, we suggest disabling it first before connecting to Netflix. Follow these steps:

• Close the Netflix app.
• Turn off the firewall and antivirus software on your computer.
• Now, launch the Netflix app.
• Once it's connected to Netflix, turn back on the firewall and antivirus software on your computer.
• You should be able to access Netflix now.

Let us know if you need further help.

Regards.