I need to a add a button to the navigation or ribbon area of the CRM 2015 on-premise. This button should open an existing Silverlight web resource. Is that possible ?
EDIT:
This MSDN article mentions that the URL holds a value of a URL or an HTML web resource, does that mean that Silverlight webresource is not possible ?
Url
Specifies a URL or HTML Web Resource for a page to display in the main frame of the application when this subarea is selected.