You don’t have to be stuck with the default browser for testing/running your Silverlight applications. If say, you wanted to change it from Internet Explorer to Google Chrome, you can do it.
Within Visual Web Developer or the Visual Studio IDE, change the settings such that a browser of your choice is used to test or run your Silverlight applications. How do you do this? Simple. In the Solution Explorer pane, right click on the HTML page name which is going to be your start page (for example, DemoTestPage.html). After right clicking the HTML page, in the context menu, select Browse With…
This opens a dialog box. Select your browser name (if present, else use the Add button to add a new browser)and click Set as Default. That’s it!