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:   4.0.50401.0
MD5:   8006fc6a9a7c3168ef15dba842c3afc5
SHA1:   85a042331ca041b5e7ac17eecffc43dbbde26ba6
SHA256:   64a3f76fdfe5363f51eb9c767fa4d03b30e6aa7ffc145f203ee97c11c953c972

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:4.0.50401.0
Size:989.5 KB (1,013,248 bytes)
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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