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Cannot install Windows Media Player 11 plugin. Not even manually

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Since I can't install the Windows Media Player 11 plugin through the plugins section, I tried installing it manually from the link http://port25.technet.com/pages/windows-media-player-firefox-plugin-download.aspx multiple times and it still will not show up in about:plugins. I followed instructions from Firefox and rebooted after the install and still won't show up. I am using Windows 7 64 bit and have the latest version of Firefox. cannot play videos embedded in websites that support windows media streaming.

Since I can't install the Windows Media Player 11 plugin through the plugins section, I tried installing it manually from the link http://port25.technet.com/pages/windows-media-player-firefox-plugin-download.aspx multiple times and it still will not show up in about:plugins. I followed instructions from Firefox and rebooted after the install and still won't show up. I am using Windows 7 64 bit and have the latest version of Firefox. cannot play videos embedded in websites that support windows media streaming.

Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.7.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Google Update
  • Shockwave Flash 11.4 r402
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.4
  • GEPlugin
  • 5.1.10411.0
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.1.629
  • NPWLPG

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1

More Information

Tried downloading manually from http://port25.technet.com/pages/windows-media-player-firefox-plugin-download.aspx and installed it. Install says it succeeded, but will not show in about:plugins or the plugins list in Firefox

cor-el
  • Top 10 Contributor
  • Moderator
12736 solutions 117068 answers

Did you try to run the installer as Administrator?

You can try to search for the WMP plugin (np-mswmp.dll) and copy the plugin to a folder where Firefox can find it (e.g. create a %APPDATA%\Mozilla\plugins folder).

Did you try to run the installer as Administrator? You can try to search for the WMP plugin (np-mswmp.dll) and copy the plugin to a folder where Firefox can find it (e.g. create a %APPDATA%\Mozilla\plugins folder). *https://developer.mozilla.org/en/Gecko_Plugin_API_Reference/Plug-in_Basics#How_Gecko_finds_plug-ins * http://kb.mozillazine.org/Windows_Media_Player#Missing_plugin

Modified by cor-el

Question owner

I've installed the plugin 5 times and that dll isn't anywhere to be found. Plugin will not show in the pluigins list either. Thanks for the suggestion anyway.

I've installed the plugin 5 times and that dll isn't anywhere to be found. Plugin will not show in the pluigins list either. Thanks for the suggestion anyway.
MyUsernameHere 0 solutions 18 answers

Helpful Reply

I ran into this problem today with FF 18.0.1 under Win7 64-bit.

I downloaded the WMP FF plugin installation package from Interoperability Bridges as it says here: [https://support.mozilla.org/en-US/kb/play-windows-media-files-in-firefox?...].

After installing, I reopened FF but the plugin was not listed. I tried the "Install Add-on from File" option, navigated to the DLL, and it said it could not install the plug-in because it "appears to be corrupt."

I tried a couple more times because one thread said it worked after getting the installation package from a different mirror, but no luck.

I found in this bug report (Klaassen-Comment 14) [https://bugzilla.mozilla.org/show_bug.cgi?id=421820#c14] that copying the DLL to this folder might work:

C:\Users\username\AppData\Roaming\Mozilla\Plugins\np-mswmp.dll

I did, and it installed without complaint. Obviously, it was not corrupt.

See, however, Comment 15 in the same bug report for an alternative.

Someone needs to add this information to the support page on how to install the plug-in.

I ran into this problem today with FF 18.0.1 under Win7 64-bit. I downloaded the WMP FF plugin installation package from Interoperability Bridges as it says here: [[https://support.mozilla.org/en-US/kb/play-windows-media-files-in-firefox?esab=a&s=windows+media+player+plugin&r=1&as=s]]. After installing, I reopened FF but the plugin was not listed. I tried the "Install Add-on from File" option, navigated to the DLL, and it said it could not install the plug-in because it "appears to be corrupt." I tried a couple more times because one thread said it worked after getting the installation package from a different mirror, but no luck. I found in this bug report (Klaassen-Comment 14) [[https://bugzilla.mozilla.org/show_bug.cgi?id=421820#c14]] that copying the DLL to this folder might work: C:\Users\username\AppData\Roaming\Mozilla\Plugins\np-mswmp.dll I did, and it installed without complaint. Obviously, it was not corrupt. See, however, Comment 15 in the same bug report for an alternative. Someone needs to add this information to the support page on how to install the plug-in.

Modified by MyUsernameHere

cor-el
  • Top 10 Contributor
  • Moderator
12736 solutions 117068 answers

Helpful Reply

See also: * http://kb.mozillazine.org/Windows_Media_Player#Missing_plugin
MyUsernameHere 0 solutions 18 answers

Great link, cor-el! Thanks!

Great link, '''cor-el'''! Thanks!