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:   5.1.20913.0
MD5:   be501cbc29b2025a263d80d399f1797a
SHA1:   17d3c9489a766cd0936d0f3cda55b01e3a8c537b
SHA256:   27aef22333e5143186bcee71da459adac962535069286999d4a29fc2f5280814

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, Microsoft Silverlight from Microsoft Corporation and Microsoft Silverlight 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:5.1.20913.0
Size:1.15 MB (1,210,512 bytes)
Build date:9/13/2013 1:34 AM
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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