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A colleague has an issue with an xbap Application: When accessing the URL, the following message appears

Startup URI: https://app.service.url/App.Client.xbap
Application Identity: 

The download of the specified resource has failed.
-----------------------
PresentationHost.exe v4.0.41210.0 built by: Main - C:\Windows\SysWOW64\PresentationHost.exe
ntdll.dll v6.1.7600.16385 (win7_rtm.090713-1255) - C:\Windows\SysWOW64\ntdll.dll
kernel32.dll v6.1.7601.18015 (win7sp1_gdr.121129-1432) - C:\Windows\syswow64\kernel32.dll
....

When I set up a WebEx session and he enables Screensharing, the download succeeds and he can access the application. But as soon as he ends the screensharing, the download starts to fail again. A cleanup of the cache does not help via rundll32 %windir%\system32\dfshim.dll CleanOnlineAppCache He is trying to access the application in a Citrix environment to have access to the company network.

I tried to find out which settings the WebEx Screensharing changes, but without success.

Here are a few details:

  • IE 11.0.9600.18762
  • Compatibility Mode: Enabled
  • Access via https

Currently I am trying to get the application download to fail on my machine. The things I have tried so far (but did not reproduce the error):

  • I have read that WebEx changes the Protected Mode-Setting, so I enabled and restarted my machine
  • Switch settings to disabled via "Settings -> Internet Options -> Security -> Custom Level..."

Any input on how to tackle this issue, or the settings which are changed via WebEx screensharing would be very helpful.

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1 Answers1

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Modify this GPO and you should be good to go:

User Configuration\Policies\Administrative Templates\Windows Components\ Internet Explorer\Internet Control Panel\Security Pages\Advanced Page\Do not save encrypted pages to disk.

Roderick Ramírez
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