During the logon process to a XenApp 6 server, the client progress dialogue will show briefly then disappear at various stages after "Applying user settings...", giving no feedback to the user about the logon process.
For a desktop that user will see the desktop with a black screen. For a seamless application, the user will see nothing between the progress dialogue disappearing and the application starting.
This is an issue with the following components:
- XenApp 6
- Citrix Online Plug-in 11.X
- Citrix Online Plug-in 12.0
Using the 10.X client does not show the issue:
http://theether.net/download/Citrix/ica32pkg.10.200.msi
There is currently a private hotfix that consists of a client and server component.
Hotfix for Client 12.0.3
ProgressNotificationCommon.dll
wfcrun32.exe
wfcwinN.dll
wfica32.exe
Hotfix for XenApp 6
statui.dll
The client hotfix will be included in the 12.1 client, and the public XenApp 6 hotfix will be released at the same time.
Note: The Citrix Desktop Viewer toolbar (ShowDesktopViewer=On in WebInterface.conf/ConnectionBar=1 in launch.ica) is not supported on XenApp 6, only on XenDesktop implementations. Resolving black screens in Citrix Desktop Viewer is an enhancement that may be available in v13 of the Citrix Online Plug-in.
Workaround: To revert to the Windows 2008 R2 logon dialog, set the following registry entry as per CTX104893. This will work around the black screen issue.
REG ADD HKLM\Software\Wow6432Node\Citrix\Logon /v DisableStatus /t REG_DWORD /d 1 /f
Update: The following hotfix has been released to resolve the issue:
LIMITED RELEASE - Hotfix XA600W2K8R2X64007 - For Citrix XenApp 6.0 for Windows Server 2008 R2 - English
http://support.citrix.com/article/CTX126291
New Fixes in This Release
When the Windows logon takes a long time due to, for example, Active Directory authentication, a full-screen published desktop does not display a status indicator to provide status feedback. This can be confusing to users. This fix modifies the behavior of the status indicator so that the indicator remains visible until the authentication completes.
Note: To correct this issue in its entirety, you must install both a server hotfix (XA600W2K8R2X64007 or its replacement) and a plug-in hotfix (12.0.39 or its replacement) that contains Fix #235374.
[From XA600W2K8R2X64007][#235374]
statui.dll 11/03/2010 17:06 102,008
Note: This hotfix will only resolve the issue for WFICA sessions. Citrix Desktop Viewer sessions (ShowDesktopViewer=On in WebInterface.conf/ConnectionBar=1 in launch.ica) will still have the issue.