While currently, only Internet Explorer 10 and 11 support Silverlight, IE10 has already gone end of life at the end of 2020, making IE11 the last supported browser to also support Silverlight. Microsoft Silverlight will reach the end of support on October 12, 2021. As part of the IE11 end of life, Silverlight will go end of life on October 12, 2021. Silverlight was released on September 5, 2007, and the last browser to support it is Internet Explorer 11.
Silverlight supports H.264 video, Advanced Audio Coding (AAC), Windows Media Video (WMV), Windows Media Audio (WMA), and MPEG Layer III (MP3) media content across all of the supported browsers, it does not require Windows Media Player, Windows Media Player ActiveX control, or Windows Media browser plug-ins.
Microsoft has used Silverlight in their own browsers to provide media streaming, multimedia, and more. Microsoft Silverlight is an application framework for creating web applications. This application framework has been Microsoft's version of Adobe Flash and has been used for streaming media, multimedia, and animations in web applications. Microsoft Silverlight is going end of life on October 12, 2021.