XBAP - This application type has been disabled

I have an XBAP on my website that used to work. I checked it today for the first time in ages and found it's not working on开发者_如何学Go Win7 x64 / IE9.

http://drewnoakes.com/code/wpf/flags/demo/demo.xbap

The error message I see is:

Startup URI: http://drewnoakes.com/code/wpf/flags/demo/demo.xbap Application Identity: http://drewnoakes.com/code/wpf/flags/demo/demo.xbap#demo.xbap, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6d8e235cc7c0267c, processorArchitecture=msil/demo.exe, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6d8e235cc7c0267c, processorArchitecture=msil, type=win32

This application type has been disabled.

Can anyone explain what this means or provide information about how I might debug this further?

Or you can enable XBAP applications in IE9.

Security -> .NET Framework -> XAML browser applications

• Disable
• Enable
• Prompt

Here is an explanation:

• IE9 - XBAPs Disabled in the Internet Zone

Apparently you can undo the change IE9 made to URLACTION_WINDOWS_BROWSER_APPLICATIONS or you could change the zone for your site.

Or you can add derewnoakes.com to the Trusted sites.

How to add to the trusted sites?