Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox has stopped playing videos on some web sites and will not display all graphics on others. Did get Windows error msgs before videos stopped.

more options

A couple of times I got Windows error messages about a problem with Firefox and security but I do not remember the exact wording of the error message or what Windows disabled.

Now on some news sites I cannot play videos, this is also now happening on YouTube where I get an error message when I try to play a video.

I am also having problems on the Major League Baseball site with the browser displaying some graphics.

I have restarted Firefox several times and even restarted my computer but this has not resolved the problem.

Any ideas as to what has gone wrong or how to force Windows to display the error message again?

A couple of times I got Windows error messages about a problem with Firefox and security but I do not remember the exact wording of the error message or what Windows disabled. Now on some news sites I cannot play videos, this is also now happening on YouTube where I get an error message when I try to play a video. I am also having problems on the Major League Baseball site with the browser displaying some graphics. I have restarted Firefox several times and even restarted my computer but this has not resolved the problem. Any ideas as to what has gone wrong or how to force Windows to display the error message again?

Asịsa ahọpụtara

hello rsmith2000, this is likely a problem related to the latest update of the flash plugin - for common solutions of this problem please refer to Flash 11.3 doesn't load video in Firefox

Gụọ azịza a na nghọta 👍 2

All Replies (3)

more options

Only security software (probably anti-virus software or the firewall) would show such a message if it was a Windows message, so you can check it there.

If it is a message from a Firefox extension then see this:

more options

Asịsa Ahọpụtara

hello rsmith2000, this is likely a problem related to the latest update of the flash plugin - for common solutions of this problem please refer to Flash 11.3 doesn't load video in Firefox

more options

Turns out the Enable download and recording setting for Real Player was causing the video play problem and de-selecting it solved the problem, videos play just fine now. Funny thing is Firefox is not one of the browsers listed beneath the check box.