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Netflix Error - F7355-1203

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  • Last reply by edu3382736

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Hi,

I was using FF on Ubuntu 22.04.4 LTS. Had version FF 120.x and playing video in Netflix worked fine. Then I updated to FF 124.x and playing video stopped with error F7355-1203.

I've checked the DRM setting and it is enabled, I checked addons and I have OpenH264 and Widevine installed, both set to always active.

I've checked installed codecs and I do have libavcodec58 installed. No update for that available via apt. I also have ffmpeg installed, no problem with that either. I can play Netflix videos in Chrome, but not in Firefox now. Something happened to Firefox when I updated from 120.x to 124.x. Today I updated to 125.x, same problem, Netflix video won't play.

I've unchecked the DRM setting and re-checked it, and that does reinstalled Widevine but does not fix the problem.

Any ideas what could be the cause?

Hi, I was using FF on Ubuntu 22.04.4 LTS. Had version FF 120.x and playing video in Netflix worked fine. Then I updated to FF 124.x and playing video stopped with error F7355-1203. I've checked the DRM setting and it is enabled, I checked addons and I have OpenH264 and Widevine installed, both set to always active. I've checked installed codecs and I do have libavcodec58 installed. No update for that available via apt. I also have ffmpeg installed, no problem with that either. I can play Netflix videos in Chrome, but not in Firefox now. Something happened to Firefox when I updated from 120.x to 124.x. Today I updated to 125.x, same problem, Netflix video won't play. I've unchecked the DRM setting and re-checked it, and that does reinstalled Widevine but does not fix the problem. Any ideas what could be the cause?

Modified by cor-el

Chosen solution

The ESR version did not work either.

So I went back to FF 125.x. Then I discovered that if I update all snap packages the problem is resolved !

I noticed that ffmpeg was updated via the snap package updates, so that might have been the underlying issue.

I do NOT like the snap subsystem. Apt is much better.

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All Replies (17)

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Additional detail: I've cleared the data cache in the browser and Netflix cookies too. Same problem persists.

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More info: I've reset the default user agent in Firefox, and I don't have any plugins that should cause Netflix video to not play. I have 2 ad blockers installed, but both are disabled for Netflix.

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Does it still happen with the flatpak package?

You will also need to install the ffmpeg flatpak that matches the Firefox runtime (23.08):

flatpak install org.freedesktop.Platform.ffmpeg-full//23.08
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I don't know, I have not tried Flatpak. Why does it not work from the snap package?

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Are you able to visit *redirector.gvt1.com*? It should show a 404 error message with a Google logo.

Try changing DNS over HTTPS (DoH) to "Off" or "Max Protection" and in Connection Settings change "Use system proxy settings" to "No proxy".

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Checking the "redirector" site you linked I get a 404 as you mentioned.

I turned off DNS over HTTPS and that did not fix the problem.

I do not have any proxy set on the browser or this entire system.

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Does it still happen in a new profile? An easy way to test a new profile is to install Developer Edition and see if it happens there or refresh your existing profile. Make sure you stay signed out of your sync account when testing.

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I tried Troubleshoot mode and it does not work that way either. Wouldn't that be about the same as using a new profile?

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No, Troubleshoot Mode only disables a few settings while a new profile is a clean slate. Installing the flatpak package is another way to test a new profile.

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I created a new profile and started Firefox with that profile, same error even though the OpenH264 and Widevine plugins were installed and DRM enabled.

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You can check the connection settings and check for possible issues with a Proxy or VPN service.

  • Settings -> General -> Network: Connection -> Settings

If you do not need to use a Proxy to connect to internet, select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See also:

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I mentioned in a previous post that I do not have any proxy configured in the browser or the system in general. No proxy, no VPN, just straight to the Internet via the usual in-house router.

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Do DRM protected videos work on other sites like https://bitmovin.com/demos/drm?

Did you try the flatpak package?

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I tried the bitmoving site you linked, the video plays.

I also tried this one below clicking on videos that show that they use Windvine, those play too.

https://shaka-player-demo.appspot.com/demo/#audiolang=en-US;textlang=en-US;uilang=en-US;asset=https://storage.googleapis.com/shaka-demo-assets/sintel-widevine/dash.mpd;panel=ALL_CONTENT;build=uncompiled

I have not tried Flatpak. I have Firefox installed via Snap ever since Ubuntu switched the package to Snap. As I mentioned it worked great before I upgraded from v120.x to v124 and 125.

I do not understand why this happened.

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Does it still happen with the ESR version (115)?

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Seçilmiş Həll

The ESR version did not work either.

So I went back to FF 125.x. Then I discovered that if I update all snap packages the problem is resolved !

I noticed that ffmpeg was updated via the snap package updates, so that might have been the underlying issue.

I do NOT like the snap subsystem. Apt is much better.

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I had the same problem after installed Ubuntu 24.04, but I have fixed installing libavcodec-extra ffmpeg after installing ffmpeg.