Question about Mozilla Firefox

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Every time I try to play a youtube video, a message pops up saying Firefox has encountered a problem and has to close.

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There are three possibilities.

Make sure FireFox is fully updated
From the menu at the top of the browser goto Help > Check for updates

Make sure you have all the essential media codec's:

Ensure that you have updated both Flash and Quicktime Player

If all else fails:
Uninstall Firefox and Re-install with a newly downloaded installer file at the Firefox site.

If this information has been helpful, please rate. If not please let us know.

Posted on Apr 18, 2009

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Try rolling back to an earlier version of Macromedia Shockwave Flash (No earlier then ver 8) since youtube uses swf and sometimes the plugin causes issues with mozilla (based loosly on gecko)


Posted on Apr 18, 2009


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Posted on Jan 02, 2017

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Hi every time I go to play youtube videos I keep getting a message saying invalid source. What does this mean and what can be done to solve the problem thank you for your time.
Phone Number


Average Wait: 38 mins - Monday - Friday during 8:00 A.M. to 5:00 P.M. Pacific Standard Time (PST)

Try using a different browser like Firefox or Google Chrome you can get them at the link below INSTALLED:

Ninite Install or Update Multiple Apps at Once

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Broadcast yourself

are you uploading from your phone or from a PC?

If from a PC, try thisL

* use Chrome to upload, instead of Internet Explorer or Firefox
* Go to the upload page
* before you upload, look for the URL in the address bar. Change the 'http' to 'https' and press enter to reload the page.
* then, upload normally.

The HTTPS version of Youtube's upload page has some error correction that helps it overcome the occasional hiccup the internet encounters.

Nov 20, 2013 | YouTube Videos

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In Mozilla fire fox 4.0, I can browse all the web site except I'm using windows xp service pack 3.Sometimes I got into but can't open any object. The message showed:- ...

Are you using your school's computer-network, or your employer's computer-network?

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Mar 30, 2011 | Mozilla Firefox

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When youtube video starts ,some kind of pop up covers video,making it blurry and the video controls you can't see,how do you fix this issue?

These days, many YouTube videos (especially the popular ones) have a small pop-up advertisement near the beginning of the video. This ad will pop up right above the controls near the bottom of the video.

Simply clicking on the '[x]' located on the top-right of the ad will get rid of it straight away. Unfortunately, these ads are not completely avoidable, so you will need to manually close them off yourself every now and then.

If it's not the advert I mentioned above, it could be the small boxes that appear in certain videos which have text in them, these could also be links. They can appear anywhere in the video, because it's up to the person who uploads the video to insert these comment. These cannot be closed.

Overall, neither of the above should block the video controls at all. Although zooming in on the browser you're using can cause certain sites to look a bit "off". If you hold down the "Ctrl" key and move your mouse wheel up and down, it will zoom in and out of the page. This might also help.
Make sure that whatever browser you're using (i.e. Internet Explorer, Firefox, Chrome) is fully up to date. Active sites such as YouTube will maintain their website to work with the latest updates.

Hope this helps!

Mar 06, 2011 | YouTube Videos

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Everytime I login to my Facebook account & try to retrive my inbox messages I get a box that pops up on the screen that says Inernet explorier has encountered a problem and must close. If it happened...

run a spyware check. Upgrade your internet explorer version, get the latest flash. if that doesn't work just browse with a different web browser such as Chrome or Firefox.

Jan 18, 2010 | Facebook Computers & Internet

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I mostly can not watch youtube videos!

1. Open your web browser.

2. Goto Tools >> Internet Options.

3. Delete all Cookies, Temporary Files and History.

4. Apply the settings and restart the browser.

* If still having problems, the reason is busy YouTube server! You should try to 'Refresh / Reload' the page!

* The video quality of most of the YouTube videos are low, so don't expect a High Quality!

please rate me if it! :)

Dec 23, 2009 | YouTube Videos

1 Answer

Every time I click something on youtube it says bad request.

check if this is the problem specific to the browser,try installing a different browser like mozilla firefox and then try opening youtube and check if you get the same message.

Jun 13, 2009 | YouTube Videos

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Apache Server Port 80

This is a problem at their end, try again later. You may want to try restarting what you were doing.

Feb 14, 2009 | YouTube Videos

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It says turn on javascript or update flsh player

  • Then, get the Flash plug-in HERE. (while using Firefox as your browser).
  • Follow the instructions for installing the add-on in Firefox, Then Restart Firefox.
  • Try your you-tube video watching now!
I Hope this Helps.

Jan 22, 2009 | YouTube Videos

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