Installing Windows Media Player Plugin for Firefox
So you just bought a training video and popped it into your computer. You click on the menu in the autoplay dialog and it opens up Firefox, your default browser. Now you are staring at a blank screen. What now?
The problem is most likely because you don't have the Windows Media Player plugin installed for Firefox, so all we need to do is install it.
Note that you'll usually have the same problem anytime you try and view video files in FIrefox using Windows Media format, such as .wmv files.
Installation
Just download and run the plugin installer linked below. You'll probably want to close Firefox during the installation.
Verifying Plugin Installation
After running through the very quick installation wizard, you might be curious if the installation actually worked. While the easiest method is to just open a Windows Media video, you can also type the following into the address bar to see the list of loaded plugins:
about:plugins
And you should see the Windows Media Player plugin in the list. You can also see which file types Firefox will use the plugin on.
And now I can view this Windows Media format video file in Firefox…

Technical Notes
In case you have any issues with this installer, you might want to take a look at this list to help with your troubleshooting:
- The WMP plugin uses the IE Proxy settings, not the ones in Firefox. This is because the plugin itself is only a thin wrapper around Windows Media Player, which always uses IE internally to fetch data.
- The plugin files are installed to the "C:\Program Files\Mozilla Firefox\plugins" directory by default, and the file name is np-mswmp.dll. If the uninstaller fails to remove this file for whatever reason you can manually delete it.
- You could also theoretically copy the same .dll file into the plugins directory on any Firefox installation and it should work without running the installer.
Download Windows Media Player Firefox Plugin from port25.technet.com [source]


nice find friend..
I wonder what all kind of internet surfing you do and which feeds you read so as to get soo cool articles for your blog.
and hey could please tell me how do you create those images for your posts which have shades in the borders?
do you use picnik premium account??
Great! Although this is for Firefox it works in Opera too and just solved a problem for me. Keep up the great work-look forward to your posts.
Apparently this is for Microsoft OS only.
You are correct, this will only work for Windows… I should have mentioned that.
You can get a plug-in that plays Windows Media Player content on Ubuntu by installing the mozilla-mplayer package- it should work with Firefox, Opera, and other browsers that support Mozilla plug-ins. You may want to install kmplayer-konq-plugins if you use Konqueror however.
Help, please. I just attempted to install this wmp firefox plug-in and seems fairly straight forward. However, I can't view embedded media player files. I closed all Firefox windows prior to installing. My verification page says the .wmv extension is enabled.
Cannot view a .wmv embedded video, but can with MSIE.
Firefox version 2.0.0.1.3. Running Windows XP with Service Pack 2.
Any suggestions?
I can view my windows media player but not in FF. I have installed the plug ins as stated but its still not displaying in FF. plybe it my coding thats wrong. Can someone give me a code that correctly displays this Windows media player in both IE and FF. I m using IE7 and FF 2.0.0.12