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Videos offered on the web.de site do not play under Firefox

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Hello, I am using Windows 10 and the current version of Firefox. The videos offered on the web.de site do not play under Firefox. They start, but after about 2 seconds the video stops. Videos from other providers work with Firefox without problems Under Microsoft Edge the videos from web.de are played without problems. Maybe someone can help me? That would be nice!

Many greetings to the forum, Peter


Translated with www.DeepL.com/Translator (free version)

Hello, I am using Windows 10 and the current version of Firefox. The videos offered on the web.de site do not play under Firefox. They start, but after about 2 seconds the video stops. Videos from other providers work with Firefox without problems Under Microsoft Edge the videos from web.de are played without problems. Maybe someone can help me? That would be nice! Many greetings to the forum, Peter Translated with www.DeepL.com/Translator (free version)

所有回覆 (4)

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Does a MP4 video like this play ?

  • https://v.web.de/35934826_MD.mp4

Any media related messages in the Web Console ?

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- Yes, this MP4 video plays without problems.

  It probably concerns media related messages.

- I am not familiar with developer tools. I'm afraid of doing something wrong.

Thanks you for your answer!

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If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, DuckDuckGo PE, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content.

Firefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content. You can click shield icon for more detail and possibly disable the protection. You can check the Web Console for messages about blocked content.


You can try these steps in case of issues with webpages:

You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files.

  • hold down the Shift key and left-click the Reload button
  • press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • press "Command + Shift + R" (Mac)

Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Settings).

"Remove the Cookies" for websites that cause problems:

  • Settings -> Privacy & Security
    Cookies and Site Data: "Manage Data"

"Clear the Cache":

  • Settings -> Privacy & Security
    Cookies and Site Data -> Clear Data -> Cached Web Content: Clear

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window
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It's all too difficult for me. I´m not a digital native. I will open web.de with Microsoft edge in future. Thank you very much for your effort.