Microsoft announced the end of support for Silverlight in 2015, and the plugin was officially retired in 2021. The company has since focused on other technologies, such as HTML5, .NET, and Azure.
Silverlight was discontinued for several reasons, including:
| Original Silverlight Feature | Modern Replacement | |------------------------------|--------------------| | Video/DRM streaming | HTML5 <video> + Encrypted Media Extensions (EME) + PlayReady CDM | | Rich UI / XAML | React, Angular, Vue, or Blazor (WebAssembly) | | .NET code in browser | Blazor WebAssembly (runs C# directly) | | 2D/3D graphics | Canvas, WebGL, WebGPU | | Offline apps | Progressive Web Apps (PWAs) | | Cross-domain networking | CORS + Fetch API / WebSockets | microsoft plugin silverlight
To understand Silverlight, you have to understand the digital landscape of the mid-2000s. HTML (the language of the web) was stagnant. HTML4 was old, and the modern HTML5 standard was just a twinkle in a developer's eye. Websites were largely static documents.
In a plugin-based world, the web is fractured. If you are on an iPhone, you can’t install a plugin. If you are on a Linux machine, you might be out of luck. The user had to stop, download an installer, and restart their browser just to view content. Microsoft announced the end of support for Silverlight
Immediately plan migration to modern web technologies (Blazor, HTML5, or re-architecture) before the last remaining legacy browser modes are fully removed.
If you wanted animation, video, or interactivity, you needed a plugin. The king of the hill was . Flash was everywhere, but it was buggy, a resource hog, and security nightmares were common. HTML (the language of the web) was stagnant
that was once used to create and deliver rich internet applications (RIAs), multimedia, and interactive web content . Launched in 2007 as a direct competitor to Adobe Flash , it reached its official End of Support on October 12, 2021 .
| Year | Event | |------|-------| | 2011 | HTML5 gains momentum; Steve Jobs’ “Thoughts on Flash” highlights plugin vulnerabilities and performance issues (indirectly affecting Silverlight). | | 2012 | Netflix begins moving to HTML5 video. | | 2015 | Microsoft announces end of support for Silverlight 5 (the last version). | | 2021 | Microsoft formally ends support (Oct 12, 2021) for all versions. | | 2022 | , making Silverlight unusable on the modern web. |
The Evolution and Retirement of the Microsoft Silverlight Plugin