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Firefox Add-ons to Support .NET Application Deployment

Updated: December 2009

The Windows Presentation Foundation (WPF) plug-in for Firefox and the .NET Framework Assistant for Firefox enable XAML browser applications (XBAPs), loose XAML, and ClickOnce applications to work with the Firefox browser. 

The WPF plug-in for Firefox enables XBAPs and loose XAML files to be navigated to and run at the top-level or in an HTML IFRAME in the Firefox browser. An XBAP is a WPF application that can be published to a Web server and launched within supported browsers. Loose XAML is an XAML-only file that can be navigated to and displayed in supported browsers, much like an XML file. The WPF plug-in for Firefox is installed with the .NET Framework 3.5 or the .

The .NET Framework Assistant for Firefox enables stand-alone ClickOnce applications to run from the Firefox browser. The .NET Framework Assistant functions identically when installed before and after the Firefox browser. When the Firefox browser is launched and the .NET Framework 3.5 SP1 is installed, Firefox finds and installs the .NET Framework Assistant. Users can configure the .NET Framework Assistant to do the following:

  • Prompt before running the application.

  • Report all installed versions of the .NET Framework or just the latest version.

The .NET Framework Assistant is included with the .NET Framework 3.5 SP1. For information about removing the .NET Framework Assistant, see How to remove the .NET Framework Assistant for Firefox.




December 2009

Adding link to how to remove .NET Framework Assistant.

Information enhancement.

February 2009

Added information about the .NET Framework Assistant and revised the information about the WPF plug-in for Firefox.

Information enhancement.

July 2008

Added topic.

Information enhancement.