Windows 11 VDA seamless app launches with fullscreen black border behind logon window

Windows 11 VDA seamless app launches with fullscreen black border behind logon window

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Article ID: CTX691531

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Updated On:

Description

The customer uses windows 11 VDAs to provide access to a published application which has desktop operating system requirement.

The initial launch of the published application showed the seamless application launch with a full screen black border behind the logon window.  This is disruptive to users expecting a windows seamless application launch.

Windows 10 VDAs did not show the same behavior. 

Environment

Caution! Using Registry Editor incorrectly can cause serious problems that might require you to reinstall your operating system. Citrix cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk. Be sure to back up the registry before you edit it.

Resolution

Configure below registry setting on the VDA reboot:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI\BioFeedbackUX]
"ClassName"="BioFeedbackUX XAML Host"
"Type"=dword:00020000

Problem Cause

CDF traces were captured on the CWA Client and Desktop OS VDA when launching a published application, using both working and non working VDAs.

Analysis of the CDF traces showed:

  • Non working windows 11 VDAs created a full screen window with "WindowName=Windows Hello" and the window was sent to client side, shown with black background. 
    • Windows 11 appeared to have invoked Windows Hello even when there was no explicit setting with Windows Hello.
  • Similar window was not observed in the working scenarios.
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