Silverlight had a good run, but its story is over. Windows 11 is designed for the modern web, and Silverlight is a relic of the plugin past. If you encounter a requirement for Silverlight on Windows 11, view it not as a technical hurdle to be bypassed, but as a red flag that the software you are using is critically outdated and insecure.
To understand the situation on Windows 11, one must look at the timeline of its retirement: silverlight windows 11
If you are trying to access a website or internal business tool that still requires Silverlight on Windows 11, you have a difficult road ahead. Here are your options: Silverlight had a good run, but its story is over
If this is a business application, the software vendor has failed to update their product to modern standards. Silverlight has been on "death row" for nearly a decade. You must contact the vendor immediately for an HTML5-based upgrade or alternative solution. To understand the situation on Windows 11, one
If you encounter a website or app that requires Silverlight on Windows 11, you should seek a modern alternative (HTML5, WebAssembly, or a dedicated video player). Do not install Silverlight unless absolutely necessary for a legacy internal tool, and if you do, disconnect it from the internet or run it inside a virtual machine.
Microsoft officially ended support for Silverlight on October 12, 2021 . Windows 11 was released shortly before that date (October 5, 2021), making it the first Windows version to ship without any native or active support for the plugin.