When browsing some websites like SkyDrive on Internet Explorer, you may continually get a notification asking for permission to run npctrl.dll. The prompt may look like “This webpage wants to run the following add-on: ‘npctrl.dll’ from ‘Microsoft Corporation’”.
Npctrl.dll is a Microsoft Silverlight add-on that enables interactive media experiences, rich business applications and immersive mobile apps. Certain websites (mostly Microsoft sites) require Silverlight add-ons and plugins in order to run. If these dependencies are currently unavailable, you may get notifications to enable or install them.
Also, websites run on Silverlight mode when they detects certain browsers like Internet Explorer, Microsoft Edge or Firefox but may switch to normal HTML5 mode in some cases.
In this article, we’ll look at what npctrl.dll is and how to stop pop-ups from this application.
Method 1: Resetting Zones
- Press Windows Key + R key, type inetcpl.cpl and press Enter.
- Click on the Security Tab. Uncheck “enable protected mode”
- Click on Reset all zones to default level.
- Click on Apply and OK.
Method 2: Using HTML5-based Web Browsers
Most websites, including Microsoft Websites, are switching to HTML5 or have both HTML5 and Silverlight versions. Once the website automatically detects your browser and it’s up to date, it will provide the right content to the browser. Since most browsers support HTML5 now, it’s best to get the latest update for your web browser. We recommend Google Chrome and here’s how to install it.
- Download Google Chrome from here.
- Launch the installer and grant the UAC prompt when it appears.
- Wait while Chrome is downloaded and installed to your PC. A browser Window will appear when the installation is complete.