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Your Firefox is out of date and may contain a security risk!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 21.0: flash videos on youtube demand updating linux flash plugin although the latest version 11,2,202,285 is installed and working at Adobes test site.


Youtube flv-videos generate error message stating i have to update to the latest flash player, although the latest is correctly installed and working at other sites.

Running Firefox 21.0 on Linux, and Adobes flash test reports: "You have version 11,2,202,285 installed", which is the latest flash for linux. Works fine at Adobes site.

Anyone have an explanation for this behaviour?

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.2 r202
  • The IcedTea NPR Web Browser Plugin (using IcedTea6 1.9.10 (fedora- executes Java applets.
  • Gecko Media Player 1.0.4Video Player Plug-in for QuickTime, RealPlayer and Windows Media Player streams using MPlayer
  • nspluginwrapper is a cross-platform NPAPI plugin viewer, in particular for linux/i386 plugins.This beta software is available under the terms of the GNU General Public License.
  • 4.0.51204.0
  • The Totem 2.32.0 plugin handles video and audio streams.
  • DivX Web Player version


  • User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:21.0) Gecko/20100101 Firefox/21.0

More Information

  • Top 10 Contributor
  • Moderator
10780 solutions 97024 answers

Helpful Reply

I'm also on Linux and I haven't seen such an alert on YouTube with Flash

Does this happen with all videos on YouTube?

Helpful Reply

It is probably an add-on issue, currently trying to isolate the one (but quite a few options to go). With all add-ons but flash player disabled youtube playes fine.... Ty for your interest

Modified by WPlinge