Error: unable to start debugging. Silverlight developer runtime is not installed. Please install matching version

Question

I have VS2010 and Silverlight SDK 3 and 4. I have created a sample application in vs2010 using SilverLight web application. When I press F5, the error is coming : Error: unable to start debugging. Silverlight developer runtime is not installed. Please install matching version

Answer 1

The SDK and the Developer Runtime are separate things - try uninstalling Silverlight (just the runtime, no need to uninstall SDK, Tools, etc...), and reinstalling just the Developer Runtime from here : http://go.microsoft.com/fwlink/?LinkID=188039

Answer 2

Old question - but I just picked up an old silverlight project I am taking over and ran into this error. After uninstalling and installing different versions (I have SDK5 now) the issue was that I was using Google Chrome version 47 which isn't supported (Version 42 and LATER is not supported). Micorosoft Edge isn't supported either. There's a little blurb about it at the bottom of this page: https://www.microsoft.com/getsilverlight/get-started/install/default.aspx?reason=unsupportedbrowser&_helpmsg=ChromeVersionDoesNotSupportPlugins&v=5.0.61118.0#