84,488,480 programs installed

Should I remove Windows Media Player Firefox Plugin?

What percent of users and experts removed it?
3% remove it97% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #95
United States Rank #140
Reach 4.3831%
Lifespan of installation (until removal)
< 22.27 days
657.02 days >
Average installed length: 345.21 days


VersionDistribution 100.00%

Other programs by Microsoft

Windows Media Player Firefox Plugin

What is Windows Media Player Firefox Plugin?

To play Windows Media in Firefox, you need the Windows Media Player browser plugin installed. Even if you already have Windows Media Player installed, you may still be missing the plugin required to play back Windows Media audio and video embedded in Web Pages.

About  (from Microsoft)

To see if you already have the plugin installed at the top of the Firefox window, click on the Firefox button, and then click Add-ons. The Add-ons Manager tab will open. In the Add-ons Manager tab, select the Plugins panel. Scroll down the list, and look for the entry called: Microsoft® Windows Media Player Firefox Plu...  Read more


The main program executable is np-mswmp.dll. The software installer includes 609 files and is usually about 909 KB (930,816 bytes).

Program detailsProgram details

URL: support.mozilla.org/en-US/kb/play-windows-media-files-in-firefox
Help link: www.microsoft.com
Installation folder: C:\Program Files\plugins
Uninstaller: MsiExec.exe /I{69FDFBB6-351D-4B8C-89D8-867DC9D0A2A4}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 909 KB
Language: English (United States)

Program filesFiles installed by Windows Media Player Firefox Plugin

Program module:np-mswmp.dll
Name:Microsoft® Windows Media Player Firefox Plugin
Path:C:\Program Files\plugins\np-mswmp.dll
Additional files:
  • olconnectorresources.dll - Suplemento do Office Live para o Microsoft Office (Recursos do Suplemento do Microsoft Office Live)
  • 04geometric_pinch.dll - Microsoft LifeCam (Pinch Effect)
  • 04geometric_punch.dll - Punch Effect
  • 04geometric_punchandpinch.dll - Pinch and Punch Effect
  • 04geometric_twins.dll - Mirror Effect
  • 04geometric_twirl.dll - Swirl Effect
  • 06accessories_afro.dll - 06_Accessories_Afro.dll
  • 06accessories_cat.dll - 06_Accessories_Cat.dll
  • 06accessories_clown.dll - 06_Accessories_Clown.dll
  • 06accessories_cowboyhat.dll - 06_Accessories_CowboyHat.dll
  • 06accessories_dog.dll - 06_Accessories_Dog.dll
  • 06accessories_expletive.dll - 06_Accessories_Expletive.dll
  • 06accessories_glitterstars.dll - 06_Accessories_GlitterStars.dll
  • instapi.dll - Microsoft SQL Server (SQL Server Instance API DLL)

Program behaviorsBehaviors exhibited

Google Chrome Plugin
  • np-mswmp.dll is loaded in the Google Chrome web browser as 'np-mswmp.dll'.

How do I remove Windows Media Player Firefox Plugin?

You can uninstall Windows Media Player Firefox Plugin from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program Windows Media Player Firefox Plugin, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove Windows Media Player Firefox Plugin.

How do I reset my web browser?

If your web browser homepage and search settings have been modfied by Windows Media Player Firefox Plugin you can restore them to their previous default settings.
Microsoft Internet Explorer
Mozilla Firefox
Google Chrome

Win 7 (SP1) 66%
Win 8 0%
Uninstall it 3%
Keep it 97%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 71.61%
Windows Vista 13.51%
Windows 10 8.74%
Windows XP 6.08%
Windows Server 2003 0.05%
Which OS releases does it run on?
Windows 7 Home Premium 41.01%
Windows 7 Ultimate 15.79%
Windows Vista Home Premiu... 10.59%
Windows 7 Professional 10.54%
Microsoft Windows XP 6.07%
Windows 10 Home 3.31%

Distribution by countryGeography

41.98% of installs come from the United States
Which countries install it?
  United States 41.98%
  Germany 7.86%
  United Kingdom 3.99%
  France 3.74%
  Brazil 3.16%
  Canada 2.94%
  Italy 2.65%
  Netherlands 2.46%
  Israel 1.92%
  Spain 1.53%
  Belgium 1.35%
  Australia 1.32%
  Iran 1.12%
  Japan 1.09%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Hewlett-Packard 26.31%
Dell 24.67%
Acer 18.10%
Toshiba 9.11%
ASUS 6.91%
Samsung 3.25%
Lenovo 1.80%
Intel 1.62%
American Megatrends 1.21%
Common models
HP Pavilion dv6 Notebook ... 8.31%
HP Pavilion dv7 Notebook ... 6.23%
Dell Inspiron 1545 3.00%
HP Pavilion g6 Notebook P... 2.76%
Dell Inspiron 530 2.29%
HP G62 Notebook PC 2.21%

About Microsoft

Microsoft Corporation develops, manufactures, licenses and supports a variety of products and services related to computing.
Publisher URL: www.microsoft.com

comments1 comment

user comment
user comment
Help me please!•over a year ago
Thanks for the advice, but Windows Media Player Firefox Plugin is not listed in the XP add/remove programs list. Any further help to remove this stealthily installed Microsoft plugware will be greatly received.