10 Ways To Fix YouTube Not Working On Firefox | Updated [Updated 2023]

If you’re a privacy-conscious internet user, the Firefox browser is a good choice for you. Not only does it consistently feature robust privacy and security features but the browser is also extremely polished and reliable. It’s no surprise that millions of people use Firefox for browsing the web. However, just like any other app, the Firefox browser is not perfect and sometimes, some users may encounter issues with it.

In this troubleshooting guide, we’ll deal with a common issue when YouTube videos are not working on Firefox. 

How to fix YouTube not working on Firefox browser?

There can be many different reasons if you can’t play YouTube videos on Mozilla Firefox. Check out the extensive list of solutions that you can try to fix this problem.

Fix #1: Check your internet connection.

Checking your own internet connection as the first step is important. Can you play the videos on another browser like Google Chrome or Microsoft Edge?

If you can’t browse anything or play videos on other browsers, this means that your internet connection is the problem. Consider rebooting your modem and router to see if that will help in fixing the issue.

If Youtube is not working on Firefox only, continue with the rest of the troubleshooting below.

Fix #2: Refresh the page.

A quick refresh of the page may help.

Click on the refresh button on your Firefox browser or press the F5 button on your keyboard.

Fix #3: Restart Firefox.

Another basic thing that you can do is to restart Firefox. Just close it using the Task Manager (CTRL + SHIFT + ESC) then start it back up afterwards.

Fix #4: Check for updates.

Keeping your browser running its latest version can sometimes fix performance issues and bugs. 

To update Firefox:

  1. Open Firefox.
  2. Select the More options icon at the upper right (three horizontal lines).
  3. Select Help.
  4. Click on About Firefox.
  5. Your browser should perform a quick scan to determine if there’s a pending update to be installed. If there is, just wait for the system to finish updating.

Fix #5: Clear cache and cookies.

Many Firefox users fix YouTube not working on Firefox issue by refreshing their browser’s cache and cookies. Here’s how to do that:

  1. Open Firefox.
  2. Select the More options icon at the upper right (three horizontal lines).
  3. Click Settings.
  4. Select the Privacy & Security panel and navigate to the Cookies and Site Data section.
  5. Click the Clear Data button. 
  6. Click the Clear button.

If you only have a problem with YouTube while the rest of the websites you visit are working, then you can also try to clear the cookies for YouTube only. Follow these steps to do that:

  1. Go to the top and click on the padlock beside the address bar.
  2. Click Connection secure.
  3. Click More information.
  4. Click Clear Cookies and Site Data.

Fix #6: Use hardware acceleration.

If your PC can do it, we suggest that you enable hardware acceleration on your browsers, particularly in Firefox. 

  1. Open Firefox.
  2. Select the More options icon at the upper right (three horizontal lines).
  3. Go to Settings.
  4. In the General tab, go to the Performance section.
  5. Ensure that the box beside Use recommended performance settings is checked.

Keep in mind that Firefox will automatically determine if enabling hardware acceleration is appropriate for your system. However, if you have an old or weak computer, you can manually disable hardware acceleration by unchecking the box beside Use recommended performance settings.

Fix #7: Run the Youtube videos in Private Mode.

You can check if the YouTube videos will work if you use Private Mode. To do that, just click on the More option at the upper right, select New Private Windows, then load YouTube again.

Fix #8: Use the Troubleshoot Mode.

Checking if extensions, themes, or custom settings is the main reason for your YouTube not working on Firefox issue must be done at this point. You can easily run Firefox in Troubleshoot Mode or Safe Mode with these steps:

  1. Open Firefox.
  2. Select the More options icon at the upper right (three horizontal lines).
  3. Go to Help.
  4. Select Troubleshoot Mode.
  5. Click Restart.

Fix #9: Use the Refresh Firefox option.

If your browser still does not play video properly at this point, you should refresh it. This process is also known as factory reset and will basically return all settings of the browser to defaults. Here’s how to do it:

  1. Open Firefox.
  2. Select the More options icon at the upper right (three horizontal lines).
  3. Go to Help.
  4. Select More troubleshooting information.
  5. Click the Refresh Firefox button.
  6. Click Refresh Firefox.

Fix #10: Reinstall the Mozilla Firefox browser.

Corrupted or damaged installation files or data might cause the Youtube not working on Firefox issue in this situation. If none of the steps mentioned in this guide has helped, consider deleting and reinstalling the browser.


Visit our TheDroidGuy Youtube Channel for more troubleshooting videos and tutorials.

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Harvey Hisona

Harvey is keen with mobile technology and loves writing about all things mobile. He is passionate in helping technology-challenged people by finding resolution to their issues. Contact me at Email

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