Video Playback Error: "Media could not be loaded, either because the server or network failed or because the format is not supported."

Solution 1: Disable AdBlock for the webpage the video is on

If AdBlock is the reason why you’re viewing this error message instead of the video you want to view, the problem can be resolved by simply disabling AdBlock for the webpage (or website) the video you want to watch is on.

The exact steps you need to go through in order to disable your AdBlock on a specific webpage or website vary depending on the kind of advertisement blocking utility and internet browser combination you use. For example, if you’re using AdBlock Plus on Google Chrome and want to disable the extension on a specific website, you need to:

  1. Navigate to the webpage that has the affected video on it.
  2. Click on the Options button (represented by three vertically-aligned dots) in the top-right corner of the Google Chrome window.

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  1. Click on Options

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  1. Click on the little icon for AdBlock Plus.
  2. Click on the AdBlock Plus icon
  3. You will see that the Power button is blue, meaning that AdBlock Plus is enabled. Click on the Power button and the extension will be disabled for the website you are on.

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  1. Click on the Power button
  2. For the changes to take effect, be sure to refresh the webpage you were on. Once you have refreshed the webpage, try playing the affected video and see if your browser successfully plays it.


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Click on Refresh to refresh the page via AdBlock Plus

Solution 2: Update your internet browser

Your internet browser might be having issues playing the video in question because of some kind of a problem with it (such as a lack of support for the format the video is in), a problem that was remedied by the browser’s developers in a later update. If you are seeing the “The media could not be loaded, either because the server or network failed or because the format is not supported” error message while trying to watch a video, try checking to see if there are any updates available for the internet browser you are trying to watch the video on, and then downloading and installing any updates that are available.

Exact instructions for manually checking for updates on your internet browser will vary depending on the internet browser you use. For example, if you’re using Google Chrome, here’s what you need to do in order to manually check for updates:

  1. Launch Google Chrome.
  2. Click on the Options button (represented by three vertically-aligned dots) in the top-right corner of the Google Chrome window.Click on Options

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  1. Hover your pointer over Help.
  2. In the resulting context menu, click on About Google Chrome.
  3. Click on Help > About Google Chrome

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  1. On the page that you will be taken to, Chrome will automatically begin manually checking for updates. If any updates are available, the browser will even do you the courtesy of downloading and installing them for you.
  2. Chrome will check for updates

If you do end up installing any updates for your internet browser, be sure to check whether doing so gets the affected video to start playing without a hitch.

Solution 3: Use a different internet browser

If neither of the solutions listed and described above has worked for you, there’s a chance that the internet browser you are using to play the affected video, in and of itself, is the problem. This error message has been known to affect any and all internet browsers, but in most cases, it only affects one specific internet browser for one victim of this issue. That being the case, you might be able to resolve this problem by simply using a different internet browser to play the video you want to watch. For example, if you were seeing the “The media could not be loaded, either because the server or network failed or because the format is not supported” error message while playing a video on Internet Explorer, try playing the same video on Google Chrome or Mozilla Firefox and you should be able to watch it with no problems.

Solution 4: Check your Firewall
If using a different browser does not work, then the issue may be the company firewall. Contact your company network administrator and have them "white-list" our website: drugtestingcourses.easler.com.

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