Silverlight Browser Plugin

This plugin from Microsoft for the production and presentation of rich Web applications is a source of great resentment from developers toward the firm. It actually allows for dazzling full interfaces, but all that one have learned to do this will become useless.


I have already spoken with netflix and they told me to uninstall silverlight by locating the plugin however, it is not on my HD. HELP i have spoken to three people now and no one has helped me This thread is locked. Use if you are repeatedly prompted to install Silverlight or if you are unable to install the out of browser version of TC2000 on a PC. Make sure Silverlight is set to enabled in Internet Explorer. Click on the 'Tools' or 'Settings' icon. Select 'Manage Add-Ons' 3. Select 'Toolbars and extensions'. Requirements: To install the Microsoft Silverlight browser plugin, you must have administrator access to your computer, and meet the following requirements.

Silverlight offers to navigators the graphic features of WPF and which are of the same order as the ones of Flash, the plugin from Adobe.
- Make use of XAML,
- 2D vectorial graphics with scaling of objects.
- Works with Ajax thus JavaScript, DOM and XMLHttpRequest.

Silverlight also functions in local mode under the .NET environment. On the Web, the controls are exposed to Internet Explorer through Active X while Firefox and other browsers use the Mozilla plugin technology.

The project manager, Bob Muglia, explained on the blog of Microsoft that Silverlight as a platform will be used mainly for running Windows Mobile Phone 7.

Silverlight is now our development platform for Windows Phone. Our strategy has shifted. HTML is the only true cross-platform solution for everything, including IOS.

Then the strategy has yet shifted.
The future development of Windows is in XAML, but Silverlight is a plugin and will not work in the Modern UI platform because Internet Explorer 10 on MUI will not support plugins (no ActiveX and no more Flash either).
IE 10 will support Silverlight still in the classic 'Desktop' interface as well as on other browsers. While other browsers exist, Silverlight applications can run.
But know-how with Silverlight applications remain valid with XAML + JavaScript.

Supported platforms are Windows since XP with SP2, Windows Phone, MacOS, Linux partially with Mono.

In a 2015 blog post about Edge, the Windows 10 browser, Microsoft announced its continued support to Silverlight, even if it does not work on Edge. It remains supported on Internet Explorer 11 and for out of browser apps. Since then, Microsoft encourages developers to ditch Silverlight for HTML5.

In 2021, an independent version of Silverlight appears under the name OpenSilver, with support from Microsoft. We can continue to use a good part of the Silverlight code with this runtime written in WebAssembly.

The magic of Silverlight

HTML Integration

    Silverlight is programmed in Javascript. It uses DOM to access elements of the page and JavaScript events for building the graphic objects of Silverlight.


    XAML is the markup language that describes the graphic interface.
    One can generate XAML code from data on the server, and thus create a dynamic application. The method createFromXaml called in Javascript builds the graphic components (widgets) on the page.

Vectorial graphics

    The size of images does not degrade their precision. One can reduce or increase the size but preserve a perfect image.
    The runtime is fast enough to use a video as texture of a 2D object.


    It supports video files in wmv format, in high definition. Several videos can run at the same time and a certain interactivity, as zooming, is possible.

Silverlight vs Flash

The Flash format of Adobe (formerly Macromedia) became a standard on the Web. It makes it possible to add graphic applications to the navigator, once downloaded the plugin. It is also used for Web applications, in particular by the Laszlo framework.
Microsoft hopes to replace it with a product adapted to modern technologies of the Web. It is also a plugin, but lighter and that runs on main navigators also.
However Flash runs under Linux while Microsoft provides only a runtime for Windows and Mac. Actually, a project of Silverlight for Linux, code-named Moonlight has been started on the Mono website. It is now discontinueed.

Silverlight is faster than Flash and also has the advantage of allowing development in several programming languages. But it does not work on all systems.

Silverlight vs. HTML 5

Microsoft has abandoned positioning Silverlight as an alternative to HTML 5, that becomes a standard platform for immersive applications on desktops or tablets. But it is a fragmented standard as it is supplemented by API interfaces to operating systems that are specific to each (See Tizen, Enyo in WebOS, etc.).
An essential part of Silverlight, XAML remains an alternative to HTML 5, it is much richer thanks to the quantity of tags for graphical user interfaces et is take place in Metro. The plugin itself will remain operational for a long time but its value is limited.

Programming tools

To make an application with Silverlight Microsoft has created a set of tools called Expression, equivalent of the Creative Suite software from Adobe. It is no longer distributed. Visual Studio makes it possible to produce Silverlight applications too.
Silverlight's controls can be used in several ways: they are first defined with an OBJECT or EMBED tag, or a script, or loaded from an XAML file, or an XAML content is created dynamically. And once created they are used in JavaScript.
Visual Studio and Visual Web Developer Express integrate an IDE for Silverlight.

Eclipse has an extension to build Silverlight applications, Eclipse ESL. This includes a XAML editor with preview of the interface defined. This tool is now archived, it is no longer developed.

Visual Studio 10 takes into account in its GUI the new functions.

Silverlight Browser Plugin Mac

  • An interface allows designing new components or making the design of an application.
  • Drag and drop between components and data.
  • Intellisense.

Evolution of Silverlight

Silverlight 2

Was released in final version on 14 October 2008.
This version included a subset of the .NET framework. A vocabulary of XAML has been defined specifically to make it easier for webmasters to achieve light applications online.
Silverlight Control Pack (SCP), is a system developed by Microsoft, which allows you to add new components for interfaces or backend of the platform. It helps to understand how the widgets operate in the system and interect with the implementation. It includes already DockPanel, viewbox, TreeView, Accordion and AutoComplete in addition to défault components: DataGrid, ListBox, Slider, ScrollViewer, Calendar and other controls.

Silverlight 3

Silverlight 3 added support to HD video and provided all the functionality to become a serious competitor to Adobe AIR. The final version was released on July 9, 2009... The runtime is just over 4 kb and is installed in seconds ...
This version still develops again videos features already added to Silverlight 2 to provide a better alternative to Flash.
Besides video, features are added to give a modern look to RIA are also a better access to data.

  • New video formats: H.264, AAC, MPEG 4.
  • 3D Graphics.
  • Use of graphics hardware acceleration, as games do it.
  • Dynamic stream for video according to the speed possible, with the Microsoft server.
  • Integration of Deep Zoom (a demo of this function is available on
  • Integration of Virtual Earth.
  • Supports multi-touch, the interactive screen.
  • Offline mode.
  • 60 more controls.

Allowing applications to run offline was implemented in Silverlight 3. This feature is also possible with Google Gears that allowed applications to work offline on a browser regardless of the operating system, and with HTML 5.
It seems that on an operating system which supports .NET, so Windows and MacOS, Silverlight 3 is in itself sufficient to run an application offline.
The application works within an environment with its own memory, without access to the file system, but with storage of its own data, in a database eventually.


Silverlight 4

More devices are supported: webcam, microphone, printer, mouse wheel. The major improvement is performance. Microsoft says that Silverlight application 4 runs three times faster than the previous version.

A print function available in Silverlight applications.

Webcams and microphones are added to the list of devices controllable by a Silverlight application.

It is possible to save or generate locally videos or soundtracks. As an application, Microsoft cites the video conference allowing stations to communicate without using the server.

The mouse wheel is now better taken into account and can interface with the documents or lists of an application.
The value is assigned to the Delta attribute.

The framework is now comprised of 60 widgets that you can customize.
RichTextBox is an editor that can handle links, embed images and controls.
The drag and drop works within an application between the components and also between the application and the local desktop.
It can transfer data to or from the application.

MyDocument files, MyPictures are accessed and other predefined locations in Windows to store documents.
Microsoft says that it works on other systems with different folder names.

The right mouse button can display a shortcut menu that is defined in the application.

Silverlight code once compiled can also work in a desktop application.


The 'Managed Extensibility Framework' allows you to combine the object code written in different languages.

Silverlight 5

Available on December 9, 2011, it offers improvements to video and graphics with access to system functions through the XNA game development platform. We remember that Microsoft has shown opposite WebGL because it allows such access to hardware.

See also:

  • XAML and Silverlight Tutorial, using XAML on the Web with Silverlight.
  • Moonlight, is a portable version for Linux and MacOS.

Microsoft Silverlight will reach the end of support on October 12, 2021. Silverlight development framework is currently only supported on Internet Explorer 10 and Internet Explorer 11, with support for Internet Explorer 10 ending on January 31, 2020. There is no longer support for Chrome, Firefox, or any browser using the Mac operating system.

Frequently Asked Questions

What is the current level of support Microsoft will provide for Silverlight?

Microsoft will provide technical help for customers using versions of Silverlight 5 only. Paid technical help is available to customers requiring support with issues beyond install and upgrade. Microsoft will continue to ship updates to the Silverlight 5 Developer Runtime for supported browser versions given that their extensibility model supports plug-ins; this includes updates for security vulnerabilities as determined by the Microsoft Security Response Center (MSRC).

Silverlight 5 will support the browser versions listed on the system requirements page through October 12, 2021, or though the lifecycle of the underlying browsers, whichever is shorter. The support page will be updated to reflect compatibility with newer browsers and operating system versions.

Windows 7 will reach its end of support date on January 14, 2020. Will Silverlight be supported as part of the Extended Security Update (ESU) program available for Windows 7 customers?

Silverlight’s lifecycle policy is independent from the Windows 7 policy. After January 14, 2020, customers using Silverlight on Windows 7 will no longer be supported and will no longer receive automatic security updates.

What happens on October 12, 2021? Will existing applications stop working?

Microsoft is not planning to take any specific action to terminate Silverlight applications. After this date, however, Silverlight will be in an unsupported state and will not receive any future quality or security updates.

Will companies be legally allowed to continue to run Silverlight assets after October 12, 2021? What happens to the license to use Silverlight after October 12, 2021?

Silverlight’s license is a perpetual license and is not tied to the continuation of support. While support will be ending in October 2021, this date does not affect the license, which continues in effect for as long as the customer is using the software and complies with the terms of the license.

Can companies obtain a custom agreement to extend Microsoft support past 2021?

There are no plans for extending Silverlight support beyond the existing support dates listed here.

What will happen to the website after October 12, 2021?

The website will still be available. However, the Silverlight installer will no longer be available after the end of support date of October 12, 2021.

What is the recommended technology/development framework for customers who want to migrate applications from Silverlight?

Silverlight Plugin Download

There are various options for migrating applications from Silverlight. We recommend that you evaluate the requirements of the application that you are migrating and determine the technology that best suits the application in question:

Silverlight Browser Plugin Downloads

  • If your application is non-browser dependent and you’d like to migrate to a Windows Desktop application, we recommend you migrate your application to UWP or WPF on .NET Core.

  • If your application is web-based, we recommend that you look into Blazor, which allows re-usability of .NET Silverlight code. Blazor lets you build interactive web UIs using C# instead of JavaScript. Blazor apps are composed of reusable web UI components implemented using C#, HTML, and CSS. Both client and server code are written in C#, allowing you to share code and libraries.