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What is npwinext.dll?

Part of MSN® Toolbar by Microsoft

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How is npwinext.dll loaded?

Internet Explorer BHO - The npwinext.dll BHO has a registered CLSID of {d2ce3e00-f94a-4740-988e-03dc2f38c34f}. A Browser Helper Object (BHO) is a module designed as a plugin for Microsoft's Internet Explorer web browser to provide added functionality. A BHO can introduce visible changes to a IE's interface, such as installing toolbars, but it can also run without any change to the interface.
Internet Explorer toolbar - The npwinext.dll browser toolbar extension has a registered CLSID of {8dcb7100-df86-4384-8842-8fa844297b3f}. These are the toolbars that are typically underneath the navigation bar and menu in Internet Explorer and are visible as either a full or partial row.
Google Chrome plugin - npwinext.dll runs within the context of the Google Chrome web browser as plugin. Chrome supports browser plugins that run as an unrestricted separate process outside the browser and cannot be sandboxed as tabs. Plugins are generally used to add functions to the Chrome browser.
Mozilla plugin - npwinext.dll runs within the context of the Mozilla Firefox web browser as plugin. npwinext.dll is typically associtated with identifier name of MSN Toolbar with and identifier of SOFTWARE\Wow6432Node\MozillaPlugins\@Microsoft.com/NpWinExt,version=4.0. Plugins help the Mozilla Firefox Web browser perform specific functions like viewing special graphic formats or playing multimedia files like Adobe Flash or Apple QuickTime.


What is the community is seeing?What is the community is doing?
About 0.1% of all Boost users have the npwinext.dll file.Of the 0.1% of npwinext.dll users, 16.0% have disabled it.
Typical file (disk image) location:
C:\Program Files\msn toolbar\platform\4.0.0357.1\npwinext.dll

Are there other versions of MSN® Toolbar?

What else is related?

What Windows OS versions does this run on?

Microsoft Windows XP (5.1.2600.131072)

About Microsoft Corporation

Microsoft, founded in 1975 by Bill Gates and Paul Allen, is a veteran software company, best known for its Microsoft Windows operating system and the Microsoft More...
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File details

File name: npwinext.dll
Publisher: Microsoft Corporation (verified)
Name: MSN® Toolbar
Description: MSN® Toolbar
Version: 4.0.0401.0
Size: 494.84 KB
Original file name: npwinext.dll

Digital certificate

Certificate authority: Microsoft Corporation
Effective date: 10/22/2008
Expiration date: 1/22/2010

Internet Explorer BHO details

CLSID: {d2ce3e00-f94a-4740-988e-03dc2f38c34f}

Internet Explorer toolbar details

CLSID: {8dcb7100-df86-4384-8842-8fa844297b3f}

Google Chrome plugin details

Name: npwinext.dll

Mozilla plugin details

Name: MSN Toolbar
Command: SOFTWARE\Wow6432Node\MozillaPlugins\@Microsoft.com/NpWinExt,version=4.0

Image hashes

MD5: 69e8aecc6aa209b0638e562d646d8d87
SHA-1: 378908ad12db4cc4a8bfc38ea8fb7b77f27f2aad
SHA-256: ad378c1964283a3a633be789c980d9826304b4a22b38618931fe1cb534a1e577

PE image details

File packed: No
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