Videos don't play after web gl is disabled

'''''Summing up the text below:'''''
Videos and and flash applications don't work anymore after setting "webgl.force-enabled" to true (in the Firefox configurations). Setting it to false again doesn't solve the problem.
Hello.
Yesterday I tried to open a website called zygotebody, which makes it possible to look at a 3d-model of the human body.
However, the website told me the following:
“This product uses WebGL, which your browser does not appear to support.”
So I searched the internet and found '''this article''':
https://support.mozilla.org/de/questions/720087
I followed all the steps of the provided solution and entered "about:config" in the URL bar, and set "webgl.force-enabled" to true.
After restarting Firefox, the website was displayed without any difficulties.
But when I wanted to watch a video on YouTube today, the message "An error occurred. Please try again later" popped up instead of the actual video. I have the same problem with any other site showing videos such as vimeo or clipfish. '''Videos just don’t show up''' there.
There has been '''no software update''' neither of flash nor firefox nor windows in the meantime that could have caused the problems.
So it is obvious that this must have something to do with me stupidly playing around with Firefox settings...and the only thing I did is setting "webgl.force-enabled" to true.
Even '''setting it to false again couldn't solve the problem'''.
Somehow reinstalling Firefox doesn't work, as the downloaded .exe just stops working after extracting.
I '''couldn't find any fitting help''' in the forum or the FAQ, either.
So I'd be glad if someone could help me here!
Thanx in advance!

Reinstalling Firefox should be possible, however a simple re-install is unlikely to solve anything of this nature if Firefox is still running. So I will ignore that for now.
[/questions/720087] mentions several prefs not just ''webgl.force-enabled'' If that is all you changed then resetting it should have solved the problem. It may well be worth resetting all the prefs, but first of all lets explore another possibility.
I note from the system info aside that you have FlashPlayer 11.3 and RealPlayer software installed. You may in fact be getting a problem because of Flash 11.3 issues
* see [[flash 11.3 crashes]] (ignore the fact the title mentions crashes) <br/>Follow the instructions in that article and downgrade to the secure Flash 10.3 (or the less secure 11.2)
** Does that allow video to work again ?
Please post back with how you get on, and state whether or not you downgraded FlashPlayer and if so the exact version you now use.
NOTE
* this is a temporary workaround, it reduces security marginally as you loose the new ''protected mode'' feature of Flash use on Windows
* if you followed the instructions in the linked article and used Adobe uninstaller that may have unintended consequences. For instance you may need to reinstall Flash in IE .
* If the fix works, do not follow suggestions to upgrade Flash, from Adobe or Firefox's Plugincheck until this issue is resolved.
* Developers from Flash, Firefox & RealPlayer have been working on this for a few weeks. There have been, and will be other releases of software, since this issue was first noticed but AFAIK there is no imminent solution on the horizon that is likely to satisfy all users.
* presumably it is only Flash & RealPlayer videos that are problematic

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