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Windows Media Player plugin with Firefox not listed as suitable for SP3?

  • 7 trả lời
  • 26 gặp vấn đề này
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  • Trả lời mới nhất được viết bởi cor-el

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I am running XP SP3 and have Windows Media Player 11 installed....when I check my plug-ins in Firefox Microsoft DRM and Windows Media Player Plug-in Dynamic Link Library both show as outdated (, however, when I click on 'update' Windows Media Player 11 shows (which I already have) and a Windows Media Player ActiveX control for Firefox, which is not listed as suitable for XP SP3 (only SP2)?

Please advise me. Thank you.

Tất cả các câu trả lời (7)

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It looks like the plugin for XP hasn't seen any changes for quite some time. Please see this.

Using the WMP plugin

Được chỉnh sửa bởi dumdidadida vào

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Thanks very much to both of you for helping me. Yes, I can't remember the last time I checked all my Firefox plug-ins.

I have installed the new WMP plug-in (np-mswmp.dll)....and that just leaves the Microsoft DRM ( showing as outdated....when I click update on that the same options as before show....download Windows Media Player 11 (which I already have) and the plug-in that I have just installed? What should I do about that please?

Được chỉnh sửa bởi janice.lynne vào

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You can try to delete the pluginreg.dat file in the Firefox Profile Folder after exiting Firefox. To open the profile folder via Firefox: Help (Alt + H) > Troubleshooting Information > Show Folder. At the next Firefox startup the file will be created and updated, if there is a new version of the plugin installed on the system.

Firefox Profile Folder & Files

If the issue persists: Depending on your usage pattern, you may safely ignore that, or Disable it in Firefox Tools (Alt + T) > Add-ons > Plugins until you hit a roadblock when trying to play protected media. Please see this. The Windows OS forum would also be helpful in that case.

WMP 11 upgrade issue


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You may also have to delete the addons.sqlite file in addition to deleting pluginreg.dat

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Your detailed answers and links were much appreciated. I deleted both the pluginreg.dat and addons.sqlite files....but there isn't a new version of the plug-in showing, so as you suggested I will just ignore it until I hit a roadblock.

You both helped me equally....can't choose just one answer as the solution and not able to pick two.

Được chỉnh sửa bởi janice.lynne vào

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Sounds that the WMP installer didn't create the registry keys that Firefox needs to find the WMP plugin via a registry scan.
You may need to create a plugins folder and copy the np-mswmp.dll file to that folder.