X
Tap here to go to the mobile version of the site.
Your Firefox is out of date and may contain a security risk! Upgrade Firefox

Support Forum

Firefox can't play youtube videos on youtube; only embedded on other sites or in email.

Posted

Since yesterday I can't access videos on youtube any more. The page opens as it should and I can see all the video information and all comments and video suggestions, but the player itself is only a black screen. There are no controls and no picture.

I can still watch the videos embedded on other sites or in email, but not directly on youtube.

It's definitely a Firefox-related issue, because I double-checked with Chrome and IE and everything worked fine with those browsers.

Modified by all_thats_missing

Additional System Details

Sites Affected

http://www.youtube.com

Installed Plug-ins

  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.0"
  • Default Plug-in
  • Google Update
  • Shockwave Flash 10.1 r85
  • Next Generation Java Plug-in 1.6.0_22 for Mozilla browsers
  • 4.0.50917.0
  • NPWLPG
  • Version 1.0.5, copyright 1996-2010 The VideoLAN Teamhttp://www.videolan.org/

Application

  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; sv-SE; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12

More Information

Programfakta
Namn
Firefox
Version
3.6.12
Profilmapp
Öppna mapp
Installerade insticksmoduler
about:plugins
Byggkonfiguration
about:buildconfig
Tillägg
Namn
Version
Aktiverad
ID
Java Console
6.0.20
true
{CAFEEFAC-0016-0000-0020-ABCDEFFEDCBA}
Java Console
6.0.21
true
{CAFEEFAC-0016-0000-0021-ABCDEFFEDCBA}
HopSurf®
1.0.0.2
false
{1DA0528B-1DD8-4167-BFAF-E0EF94939F93}
Adblock Plus
1.3.1
true
{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
LeechBlock
0.5
true
{a95d8332-e4b4-6e7f-98ac-20b733364387}
Delicious Bookmarks
2.1.106
true
{2fa4ed95-0317-4c6a-a74c-5f3e3912c1f9}
BetterPrivacy
1.48.3
true
{d40f5e7b-d2cf-4856-b441-cc613eeffbe3}
WebMail Notifier
2.6.2
true
{37fa1426-b82d-11db-8314-0800200c9a66}
Svensk ordlista
1.44
true
sv@dictionaries.addons.mozilla.org
British English Dictionary
1.19
true
en-GB@dictionaries.addons.mozilla.org
Text Link
3.1.2009110201
true
{54BB9F3F-07E5-486c-9B39-C7398B99391C}
Greasemonkey
0.8.20100408.6
true
{e4a8a97b-f2ed-450b-b12d-ee082ba24781}
Session Manager
0.6.9
true
{1280606b-2510-4fe0-97ef-9b5a22eafe30}
FoxReplace
0.12.2
true
fox@replace.fx
Java Console
6.0.22
true
{CAFEEFAC-0016-0000-0022-ABCDEFFEDCBA}
TrackMeNot
0.6.724
true
trackmenot@mrl.nyu.edu
Modifierade inställningar
Namn
Värde
accessibility.typeaheadfind.flashBar
0
browser.history_expire_days.mirror
180
browser.places.importBookmarksHTML
false
browser.places.smartBookmarksVersion
2
browser.startup.homepage_override.mstone
rv:1.9.2.12
dom.max_chrome_script_run_time
30
extensions.lastAppVersion
3.6.12
network.cookie.prefsMigrated
true
places.last_vacuum
1288693813
privacy.sanitize.migrateFx3Prefs
true
security.warn_viewing_mixed
false

cor-el
  • Top 10 Contributor
  • Moderator
10756 solutions 96800 answers
  • If you use extensions like Adblock Plus or NoScript or Flashblock that can block content then make sure that such extensions aren't blocking content.

Start Firefox in Troubleshoot Firefox issues using Safe Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).

  • Don't make any changes on the Safe mode start window.

See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems


See also http://kb.mozillazine.org/Dom.storage.enabled

Question owner

I tried it, but it still doesn't work. It looks like this - http://img254.imageshack.us/img254/6859/whyyyy.png - no matter if I'm using Safe Mode or not.

And as I said, I can still play the videos if they're embedded somewhere. It's just on youtube I get that black box.

Question owner

I solved it! I used CCleaner, and when I turned on Firefox again youtube showed the player as normal.