Should I block it?

9% of PCs block this file from running.

VersionsAdditional versions

5.1.30214.0 7.48%
5.1.30214.0 6.93%
5.1.30214.0 0.07%
5.1.20913.0 9.49%
5.1.20913.0 14.34%
5.1.20513.0 5.33%
5.1.20513.0 11.22%
5.1.20125.0 29.43%
5.1.20125.0 13.64%
4.0.50917.0 0.14%
4.0.50524.0 0.07%
4.0.50401.0 1.73%
3.0.50611.0 0.07%
2.0.40115.0 0.07%



Silverlight Plug-In by Microsoft Corporation (Signed)

Remove npctrl.dll
Version:   4.0.50917.0
MD5:   7df3047cf5dfa4468519a50eca2c31aa
SHA1:   5d4dffebd7f33468ce4afa7b9175badbc1fdbe66
SHA256:   31d96c4bf6bfeaecc4364f3697b7f7f495584c0c94e60db1f3f14b12947fbc40

What is npctrl.dll?

Microsoft Silverlight is a free web-browser plug-in that enables interactive media experiences, rich business applications and immersive mobile apps.

About npctrl.dll (from Microsoft Corporation)

Microsoft Silverlight is a powerful tool for creating and delivering rich Internet applications and media experiences on the Web. Silverlight 5 builds on the foundation of Silverlight 4 for building b


npctrl.dll is loaded as dynamic link library that runs in the context of the Google Chrome web browser. It is installed with a couple of know programs including Microsoft Silverlight published by Microsoft Corporation and Microsoft Silverlight published by Microsoft Corporation. The file is digitally signed by Microsoft Corporation.


File name:npctrl.dll
Publisher: Microsoft Corporation
Product name:Silverlight Plug-In
Typical file path:C:\Program Files\microsoft silverlight\4.0.50401.0\npctrl.dll
File version:4.0.50917.0
Size:999.82 KB (1,023,816 bytes)
Build date:9/16/2010 9:19 PM
Issued to:Microsoft Corporation
Authority (CA):Microsoft Corporation
Digital DNA
File packed:No
More details


The following programs will install this file
Microsoft Corporation
8% remove
Microsoft Silverlight is an application framework for writing and running rich Internet applications, with features and purposes similar to those of Adobe Flash. The run-time environment for Silverlight is available as a plug-in for web browsers running under Microsoft Windows. Silverlight provides a retained mode graphics system similar to Windows Presentation Foundation (WPF), and integrates multimedia, graphics, animations and intera...


Google Chrome plugins
Stored per user in the directory 'Google\Chrome\User Data\Default\Preferences'
  • Name: 'npctrl.dll'
Mozilla plugins
  • Ag Player

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 44.50%
Windows 8.1 17.00%
Windows 7 Ultimate 10.00%
Windows 8.1 Pro 5.50%
Windows 7 Professional 5.00%
Windows 8.1 Pro with Media Center 3.00%
Windows 8 Pro 3.00%
Windows 8 2.50%
Windows 8 Single Language 2.00%
Windows 7 Home Basic 2.00%
Windows 8.1 Single Language 2.00%
Windows Seven Black Edition 1.00%
Windows 8.1 Enterprise Evaluation 1.00%
Windows 8 Enterprise 1.00%
Windows Vista Home Premium 0.50%

Distribution by countryDistribution by country

United States installs about 63.13% of Silverlight Plug-In.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 23.97%
Hewlett-Packard 21.49%
Toshiba 16.53%
ASUS 11.57%
Acer 9.09%
Lenovo 8.26%
Sony 4.96%
Samsung 1.65%
Alienware 1.65%
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