YouTube Not Working on Firefox - Common Problems and Solutions

Steven Wilson

Jul 19,2019 • Filed to: Video Resources & Tips • Proven solutions

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YouTube not working on Firefox annoys many Firefox users, they may always get "error occurred please try again later" message in Firefox or encounter YouTube black screen issue. Don't be panic if you have met these with YouTube videos when opened in the Firefox browser. We have solutions for you and we will list top common problems of YouTube not working on Firefox that the users are facing and solutions to YouTube problems in Firfox.

Problem 1: YouTube Adobe Flash Player problem in Firefox

If you have recently updated the Firefox to version 34.0.5 and 16.0.0.235 is the version of the Adobe Flash Player in your system, it will also not run YouTube Videos properly. So, updating the browser is not the solution for running YouTube videos in Mozilla Firefox. Check if you have the following extensions on your Firefox:

• Addblock Plus 2.6.6
• Flashblock 1.5.18
• Avast on-line security 10.0.2502.149

If this is the configuration of the browser that you are using, check out the solution for the problem below:

Solution: If you have 1.5.18 Flashblock installed in the Mozilla Firefox, it will not support the HTML player for YouTube. This extension is blocking the Flash Player that the YouTube videos use, which is why the YouTube videos are not playing. If you continue to use the browser, you need to know what it supports and request the required HTML5 player on the YouTube video site.

Problem 2: YouTube not loading properly in Firefox

When you click on any YouTube video, the red colored load bar goes directly to the end and the browser is unable to play the videos properly. When you click on the play button, the video shows endless loading. This problem is just with a combination of Firefox and YouTube. You will not face this problem with any other video sharing sites like Dailymotion and Twitch. People facing problems of YouTube not working properly with Firefox are however not facing the issue with watching YouTube using Google Chrome or Internet Explorer.

Solution: This problem is also because of the HTML5 problem of YouTube. Delete the YouTube cookies and the Flash videos will play again.

Problem 3: YouTube player crashes every time you try to play videos

Many users notice weird problems with YouTube not functioning in Firefox. Are you wondering what could be the issue? It could be a problem with the flash player, problem with the plugins, HTML5 Video Player, and problem due to corrupted extensions and themes.

Solution: Check the version of Adobe Flash player that you are choosing. If the Flash Player is out of date, you won't be able to play the videos properly. Update to the latest version of the player. If that does not work, try downgrading to Flash 10.3. You also need to check whether the HTML5 video player is playing the videos and ads. It is not fully functional in YouTube. Only videos with the WebM transcodes might play in Firefox. You can try writing to YouTube support if you are facing problems with HTML5 plugin in YouTube.

Problem 4: YouTube playback problem in Firefox

There are users who are facing problems with YouTube playback errors in Firefox. If the videos are not playing properly, you should be suspicious that there is some issue with the themes or extensions that you are using.

Solution: There are problems with the themes, extensions, and hardware acceleration. You can solve this problem by restarting computer in Safe Mode. To do that you need to hold the "Shift" and select "Start in Safe Mode". If restarting does not help, there is some problem with the themes, hardware acceleration, and extensions. Select the default theme and restart Firefox.

Problem 5: YouTube display problem in Firefox

When watching YouTube videos in Firefox, if YouTube crashes or is unable to display videos or colors and texts properly, be sure there is some issue that you need to fix.

Solution: Turning off hardware acceleration will solve the problem. There is a Firefox button at the top of the Firefox window. Choose that and select the Options. Click on "Advanced" and choose the General" tab. Now, you need that to choose the "Use hardware acceleration when available" option. Once done, restart Firefox.

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