Recent answers to Black screen Youtube videoshttps://support.mozilla.org/en-US/questions/10427812015-05-07T06:32:43-07:00Yes, I did for a while. Don't think it fixed it
2015-05-07T06:32:43-07:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=3#answer-725771<p>Yes, I did for a while. Don't think it fixed it
</p>The best way is to try it.
2015-05-04T04:05:19-07:00fredmcd-hotmailhttps://support.mozilla.org/en-US/questions/1042781?page=3#answer-724818<p>The best way is to try it.
</p>I think I would need to get that confirmed that i indeed have to toggle that option
2015-05-04T01:15:37-07:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=3#answer-724778<p>I think I would need to get that confirmed that i indeed have to toggle that option
</p>shadyz said
Vespardi said
1) Enter the config by typing about:config in the adress bar.
2) Enter 2015-04-30T23:23:56-07:00user1205591https://support.mozilla.org/en-US/questions/1042781?page=3#answer-723857<p><em>shadyz <a href="#answer-723849" rel="nofollow">said</a></em>
</p>
<blockquote>
<em>Vespardi <a href="#answer-723503" rel="nofollow">said</a></em>
<blockquote>
1) Enter the config by typing about:config in the adress bar.
2) Enter media.mediasource.webm.enabled and press enter.
3) Right click on it and change to true, for some reason it is set as "false" which makes MSE &amp; WebM VP9 not work properly.
4) Visit: <a href="https://www.youtube.com/html5" rel="nofollow">https://www.youtube.com/html5</a> and check that everything is OK.
5) Try to watch a video. It should work now.
</blockquote>
<p>I'm a little confused. Why would mozilla change it to false in the first place? And is this really going to fix the intermittent black screens?
</p>
</blockquote>
<p>It <em>might</em> fix it, though some users reported to me that the problem kept coming back, so here's another solution:
</p><p>1) Go tho this page: <a href="https://support.mozilla.org/en-US/products/firefox" rel="nofollow">https://support.mozilla.org/en-US/products/firefox</a>
2) Click on "Refresh firefox".
<strong>3) IMPORTANT: You will loose the config-settings, addons etc which you will have to re-install/re-configure</strong>.
But all the bookmarks, password, etc will be saved.
4) Now it should work.
</p>Vespardi said
1) Enter the config by typing about:config in the adress bar.
2) Enter media.mediaso2015-04-30T22:31:20-07:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=3#answer-723849<p><em>Vespardi <a href="#answer-723503" rel="nofollow">said</a></em>
</p>
<blockquote>
1) Enter the config by typing about:config in the adress bar.
2) Enter media.mediasource.webm.enabled and press enter.
3) Right click on it and change to true, for some reason it is set as "false" which makes MSE &amp; WebM VP9 not work properly.
4) Visit: <a href="https://www.youtube.com/html5" rel="nofollow">https://www.youtube.com/html5</a> and check that everything is OK.
5) Try to watch a video. It should work now.
</blockquote>
<p>I'm a little confused. Why would mozilla change it to false in the first place? And is this really going to fix the intermittent black screens?
</p>1) Enter the config by typing about:config in the adress bar.
2) Enter media.mediasource.webm.enable2015-04-30T00:12:17-07:00user1205591https://support.mozilla.org/en-US/questions/1042781?page=3#answer-723503<p>1) Enter the config by typing about:config in the adress bar.
2) Enter media.mediasource.webm.enabled and press enter.
3) Right click on it and change to true, for some reason it is set as "false" which makes MSE &amp; WebM VP9 not work properly.
4) Visit: <a href="https://www.youtube.com/html5" rel="nofollow">https://www.youtube.com/html5</a> and check that everything is OK.
5) Try to watch a video. It should work now.
</p>shadyz said
Should I also export and subsequently import the entire profile ,or just do it piece 2015-04-01T00:31:50-07:00fredmcd-hotmailhttps://support.mozilla.org/en-US/questions/1042781?page=3#answer-711848<p><em>shadyz <a href="#answer-711729" rel="nofollow">said</a></em>
</p>
<blockquote>
Should I also export and subsequently import the entire profile ,or just do it piece by piece?
</blockquote>
<p>In the case of just refreshing, you can import the whole profile.
But in the case of a problem, you can import everything <strong>Except</strong>
for options / settings as the problem my be there.
</p>
<blockquote>
And what does the profile contain, just those basic things like passwords,usernames, bookmarks, or is there more? Is there a link that describes the full contents? Thank you
</blockquote>
<p>Everything about the user is kept in the profile folder.
</p><p><a href="https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data" rel="nofollow">https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data</a>
Profiles - Where Firefox stores your bookmarks, passwords and other user data
Firefox stores your personal information and settings in a profile folder. This article explains the details of what is in your profile and how to locate it.
</p>FredMcD said
Good programs, when they are uninstalled, remove themselves fully.
But there are some2015-03-31T21:53:22-07:00nykolahttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-711799<p><em>FredMcD <a href="#answer-700116" rel="nofollow">said</a></em>
</p>
<blockquote>
Good programs, when they are uninstalled, remove themselves fully.
But there are some that leave something behind.
What program created the loading line?
</blockquote>
<p>Doesn't Firefox manage this himself for add-ons? If not, it would be a good idea to do so. I mean: having a reserved walled space for the add-on, and cleaning it when the add-on is removed. I think Apple does that for apps in iOS.
</p>FredMcD said
Refresh Firefox {web link} is a LAST RESORT ! !
Refresh Firefox - reset add-ons2015-03-31T13:26:02-07:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-711729<p><em>FredMcD <a href="#answer-700190" rel="nofollow">said</a></em>
</p>
<blockquote>
<strong><a href="https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings" rel="nofollow">Refresh Firefox</a></strong> {web link} is a <strong>LAST RESORT&nbsp;! !</strong>
Refresh Firefox - reset add-ons and settings
If you're having problems with Firefox, refreshing it can help. The refresh feature fixes many issues by restoring Firefox to its default state while saving your essential information like bookmarks, passwords, and open tabs.
<hr>
<p>These add-ons can be a great help by backing up and restoring Firefox
</p><p><strong><a href="https://addons.mozilla.org/en-US/firefox/addon/febe/" rel="nofollow">FEBE (Firefox Environment Backup Extension)</a></strong> {web link}
FEBE allows you to quickly and easily backup your
Firefox extensions, history, passwords, and more.
In fact, it goes beyond just backing up -- It will actually rebuild
your saved files individually into installable .xpi files.
It will also make backup of files that you choose.
</p><p><strong><a href="https://addons.mozilla.org/en-US/firefox/addon/opie/" rel="nofollow">OPIE</a></strong> {web link}
Import/Export extension preferences
</p>
</blockquote>
<p>Should I also export and subsequently import the entire profile ,or just do it piece by piece? And what does the profile contain, just those basic things like passwords,usernames, bookmarks, or is there more? Is there a link that describes the full contents? Thank you
</p>I think part of this issue could also have been my cache filling up as I had set it at 700mb at the 2015-03-31T13:24:07-07:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-711727<p>I think part of this issue could also have been my cache filling up as I had set it at 700mb at the time, increasing it seems to have worked for a little while, although I had never received that issue before that. Certainly I try to limit my usage to a couple of videos at a time now...
</p>I make febe backups consistently, but i do not want to "refresh" firefox
2015-03-31T03:32:36-07:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-711413<p>I make febe backups consistently, but i do not want to "refresh" firefox
</p>Refresh Firefox {web link} is a LAST RESORT ! !
Refresh Firefox - reset add-ons and settings
If2015-03-06T10:27:16-08:00fredmcd-hotmailhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-700190<p><strong><a href="https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings" rel="nofollow">Refresh Firefox</a></strong> {web link} is a <strong>LAST RESORT&nbsp;! !</strong>
</p><p>Refresh Firefox - reset add-ons and settings
</p><p>If you're having problems with Firefox, refreshing it can help. The refresh feature fixes many issues by restoring Firefox to its default state while saving your essential information like bookmarks, passwords, and open tabs.
</p>
<hr>
<p>These add-ons can be a great help by backing up and restoring Firefox
</p><p><strong><a href="https://addons.mozilla.org/en-US/firefox/addon/febe/" rel="nofollow">FEBE (Firefox Environment Backup Extension)</a></strong> {web link}
FEBE allows you to quickly and easily backup your
Firefox extensions, history, passwords, and more.
In fact, it goes beyond just backing up -- It will actually rebuild
your saved files individually into installable .xpi files.
It will also make backup of files that you choose.
</p><p><strong><a href="https://addons.mozilla.org/en-US/firefox/addon/opie/" rel="nofollow">OPIE</a></strong> {web link}
Import/Export extension preferences
</p>I have this one ,but i dont think it has that https://addons.mozilla.org/bg/firefox/addon/the-addon-2015-03-06T08:51:55-08:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-700129<p>I have this one ,but i dont think it has that <a href="https://addons.mozilla.org/bg/firefox/addon/the-addon-bar/" rel="nofollow">https://addons.mozilla.org/bg/firefox/addon/the-addon-bar/</a>
</p><p>And i don't think i've had this one installed on this pc, but i did have it on the other one <a href="https://addons.mozilla.org/en-US/firefox/addon/cstbb/?src=search" rel="nofollow">https://addons.mozilla.org/en-US/firefox/addon/cstbb/?src=search</a>
</p>I think it was something along these lines https://addons.mozilla.org/en-US/firefox/addon/firefox-2-2015-03-06T08:49:18-08:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-700126<p>I think it was something along these lines <a href="https://addons.mozilla.org/en-US/firefox/addon/firefox-2-theme-for-firefox-3x/?src=search" rel="nofollow">https://addons.mozilla.org/en-US/firefox/addon/firefox-2-theme-for-firefox-3x/?src=search</a>
</p><p>But i can't be sure, is there a way to find out&nbsp;? Do you remember that line that used to load up when a site is loading up (when you refresh or first click on a page)
</p>Good programs, when they are uninstalled, remove themselves fully.
But there are some that leave som2015-03-06T08:30:40-08:00fredmcd-hotmailhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-700116<p>Good programs, when they are uninstalled, remove themselves fully.
But there are some that leave something behind.
</p><p>What program created the loading line?
</p>FredMcD said
Make sure you update ALL of your programs / add-ons. In cases like
Avast and other pr2015-03-06T07:37:54-08:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-700104<p><em>FredMcD <a href="#answer-697768" rel="nofollow">said</a></em>
</p>
<blockquote>
Make sure you update ALL of your programs / add-ons. In cases like
Avast and other programs, it might be better to get the current full
installers. As to those add-ons that are outdated, check if there are
others that can do the same job.
If you post the outdated programs, we can recommend something.
</blockquote>
<p>By the way, how can I get rid of left overs from old removed addons like the loading line when FF loads pages for example?
</p><pre>I think i installed some addon to bring up some of the features from the old FF and now i still have that loading thing, which i think i removed that addon and i certainly do not want that thing to bloat firefox more than it already is
</pre>For firefox my addons update automatically yes
2015-03-05T01:02:35-08:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-699381<p>For firefox my addons update automatically yes
</p>For thunderbird?
Or for firefox
2015-03-05T01:02:06-08:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-699380<p>For thunderbird?
Or for firefox
</p>Are updates to extensions/add ons set to automatic?
Configuration Options for Updates
2015-03-04T06:05:57-08:00rmcguiganhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-699014<p>Are updates to extensions/add ons set to automatic?
</p>
<ul><li><a href="/en-US/kb/configuration-options-updates" rel="nofollow">Configuration Options for Updates</a>
</li></ul>I also received this when i started my pc today, not sure what it is ,or if it's relevant, but ive n2015-03-04T04:47:17-08:00shadyzhttps://support.mozilla.org/en-US/questions/1042781?page=2#answer-698935<p>I also received this when i started my pc today, not sure what it is ,or if it's relevant, but ive never seen it before
</p>