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The website coursera.org does not load. After sometime it displays a message, "Please use a modern browser with JavaScript enabled to use Coursera.". This happens with both the browsers I use, firefox and chrome.

javascript has not been disabled in either of the browsers.

I have the same problem with random websites with tennis.com being notable, as I access it a lot.

The loading of the websites usually gets to a point where the status bar tells , "Connecting to ...." or "Waiting for ...".

This problem is only with my ubuntu installation. The websites load fine when I attempt to access them from windows.

Could you help me troubleshoot this. This has been particularly bothersome for me as I am taking a MOOC from coursera.

EDIT After seeing a solution to a similar problem, I tried accessing coursera.org, tennis.com and foxnews.com through the proxy, daveproxy.co.uk. While tennis.com and foxnews.com loaded through the proxy, coursera.org still says, ""Please use a modern browser with JavaScript enabled to use Coursera."

  • In Chrome, try pressing <F12> and clicking Console to see if there are any errors. – Dennis Feb 11 '13 at 1:31
  • @Dennis, coursera.org is suddenly loading in chrome. tennis.com isn't. The console says, "Failed to load resource cdn.tennis.com/static/assets/stylesheets/main.css?v=0201 Failed to load resource use.typekit.net/eiv0nll.js". It's still trying though. – Abhijith Madhav Feb 11 '13 at 1:57
  • Coursera does no user agent checking. The Please use a modern browser... message gets removed with a simple JavaScript instruction unless your browser is IE 7. The only way I can see how this could fail is that the external script could not be loaded. – Dennis Feb 11 '13 at 2:03
  • @Dennis, Do you have any idea as to why that external script could not be loading? – Abhijith Madhav Feb 11 '13 at 2:44
  • There are many possibilities. It might be a simple problem with the CDN. How many times did it work in Windows? How many times did it not work in Ubuntu? – Dennis Feb 11 '13 at 2:49
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I dont advice you to use firefox when visiting coursera.org because some feature are not supported yet such as the speed change for video.

I had the same problem , I solved it by using google chrome (chromium) but you will need to install the chromium-codecs-ffmpeg-extra package to make the videos work in Chromium.

You can get it here

  • cousera.org is suddenly loading on chromium. :-| – Abhijith Madhav Feb 11 '13 at 1:58
  • What do you mean ? – meda Feb 11 '13 at 2:21
  • It wasn't until yesterday in chromium. – Abhijith Madhav Feb 11 '13 at 2:37
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Follow the below instructions from http://enable-javascript.com/

  1. In the address bar, type about:config and press Enter.
  2. Click "I'll be careful, I promise" if a warning message appears.
  3. In the search box, search for javascript.enabled
  4. Toggle the "javascript.enabled" preference (right-click and select "Toggle" or double-click the preference) to change the value from "false" to "true".
  5. Click on the "Reload current page" button of the web browser to refresh the page.

Hope it works !!!

  • Why would he have JavaScript disabled in the first place? – oldmud0 Aug 4 '16 at 16:37
  • ^ especially as he said "javascript has not been disabled in either of the browsers." – zagrimsan Aug 5 '16 at 7:49

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