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Adobe Flash does not work with firefox

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New User

Adobe Flash does not work with firefox

Was using Firefox 14 with Flash v.11disabled all Real Player plug-ins, disabled protected mode for Flash and Youtube was working correctly. Then Firefox upgraded me to 16.0.2, and Youtube doesn't work. When I click on a Youtube video, it doesn't give me any error message, just a blank screen.

Downgraded to Flash v.10, still doesn't work. But Youtube works OK with IE and Chrome.

1 ACCEPTED SOLUTION

Accepted Solutions
Site Moderator

Re: Adobe Flash does not work with firefox

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do not click the Reset button on the Safe mode start window or otherwise make changes.

Try to disable hardware acceleration in Firefox.


You can check for problems caused by recent Flash updates and try these:

  • disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
  • disable protected mode in Flash 11.3 and later
  • disable hardware acceleration in the Flash plugin
14 REPLIES
New User

Re: Adobe Flash does not work with firefox

You should reset all setup to original, it will ok

New User

Re: Adobe Flash does not work with firefox

Which setting are you referring to? How do I reset it?

Site Moderator

Re: Adobe Flash does not work with firefox

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do not click the Reset button on the Safe mode start window or otherwise make changes.

Try to disable hardware acceleration in Firefox.


You can check for problems caused by recent Flash updates and try these:

  • disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
  • disable protected mode in Flash 11.3 and later
  • disable hardware acceleration in the Flash plugin
New User

Re: Adobe Flash does not work with firefox

Ok, I've tried a combination of things and it sort of worked. I now am back in Firefox 14.0.1 and I am using Adobe 10.3.183.29. I've cleared the Youtube cache and the videos will load now. I am not sure if I should tried to update to the latest Adobe version. It worked for me before...but now sure about it now.

New User

Re: Adobe Flash does not work with firefox

Ok, I think things are working now. I have updated to Firefox 16.0.2. Cleared the youtube cache, updated my Flash to the lastest 11 version and it is working now. Thank you.

New User

Re: Adobe Flash does not work with firefox

No matter what I do, and I've done EVERYTHING that Firefox AND Adobe tell me to do, Flash just will not work sometimes.

For example, this Raw Story article. (http://www.rawstory.com/rs/2012/11/23/watch-live-black-friday-strikes-hit-walmart/). One of the embedded vids is telling me I need to update Flash (pic 1).

For kicks, I checked. See pic 2. Firefox and Flash are up-to-date, Windows is up-to-date, Hardware acceleration is OFF, Protected Mode is OFF, RealPlayer NOT installed.

Is it my settings or is the pairing eternally doomed?

2012-11-23-22-57-58-cecce2.png 2012-11-23-22-57-51-dda3bd.png
New User

Re: Adobe Flash does not work with firefox

sorry...here's the flash version page...

2012-11-23-23-10-33-e5dbe1.png
Site Moderator

Re: Adobe Flash does not work with firefox

Hi stoneynhvt

Do you have any ad-blocking extensions or software running because on that last screenshot there is also content missing?

If you use extensions (Tools > Add-ons > Extensions) like Adblock Plus or NoScript or Flash Block that can block content then make sure that such extensions aren't blocking content.

New User

Re: Adobe Flash does not work with firefox

Answering a question, 2 actually, with a question isn't acceptable.

It appears that your answer to both my questions would be yes since the only extensions I have are ad/tracker blocking extensions or software.

Maybe Mozilla should make sure that the over 18 Million combined users of those extensions get the correct information in the first place.

Something like "Use of ad/tracker blocking extensions or software will interfere with Flash functionality."?