XBAP - This application type has been disabled

Question

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 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?

Asia

Answer 1

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.

Blowtorch

Thanks Rick. I suppose the error message makes sense in hindsight, but it would be nice if it listed these options to the user, as this looks like there's an error on the site. – Asia

Answer 2

Or you can enable XBAP applications in IE9.

Security -> .NET Framework -> XAML browser applications

• Disable
• Enable
• Prompt

Reentry

I advise against this. There have been vulnerabilities found in the underlying infrastructure: technet.microsoft.com/en-us/security/bulletin/ms13-004 – Fabliau

Answer 3

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

How to add to the trusted sites?

Chekiang