Application starts in rdp but not in ica

Hello,

After instelling PSE450W2K3R06 on a XenApp Server 5 an application is crashing.
The application no longer works in the desktop and even as a published application.
The application does not give an error. Nothing to find in the eventviewer.

If the application is started you can see in Task Manager that the executable is open, but after a few seconds it's closed.
Several things have changed, but unfortunately no success.

1. Speed Screen off.
2. HKEY_LOCAL_MACHINE \ SOFTWARE \ Citrix \ CtxHook \ AppInit_DLLs \ Multiple Monitor Hook adjusted.

The application starts with a Splash Screen. I suspect therefore that Citrix uses a technique that is keeping the application to start.

The application works fine in RDP
If the hotfix is removed the application works fine in ICA and RDP.

Anyone have any ideas?

OS = Windows Server 2003 Enteprise x86
AngelolelAsked:
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AngelolelAuthor Commented:
Unfortunately has not helped.
I removed XenApp 5.0 and installed Citrix Presentation Server 4.5 with HR05.
No blue screens anymore.
And the application works again.
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Mike ThomasConsultantCommented:
If you think that the splash screen is causing the issue you can normally add a switch to the executable path "/nosplash" to disable it.........it depends onthet app though.
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AngelolelAuthor Commented:
This is not possible for this application.
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dnsguru44Commented:
Try lowering the resolution and display size of the application to 800 x 640 and make it 256 colors only.  The ica client will override this so make the same adjustments in the preferences section on the wi.
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AngelolelAuthor Commented:
Tried it, but no succes.
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AngelolelAuthor Commented:
Does anyone have any ideas?
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dnsguru44Commented:
How many servers are publishing this application?  Is it only one?  If you have more than one, do they all have the same hotfix?
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AngelolelAuthor Commented:
Yep. All the same hotfix.
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dnsguru44Commented:
Any reason you really want this hotfix?  I would suggest going with a lower hotfix.
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AngelolelAuthor Commented:
It solves problems. Problems with a bluescreen on wdica.sys.
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dnsguru44Commented:
Ok... might you have a vmware esxi server where you can bring up another citrix box for testing?  You should have at least one test server in it's own farm for testing such things as installing new hotfixes.  Also, make sure that windows update service is not running on your citrix servers as an update installed via windows could have caused this issue as well.  

The next step is a bit cumbersome but it's really the only available next step.

First, compare the windows updates that have been applied to the working server against the server that is having the issue.  See if there are any differences.
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dnsguru44Commented:
Just to confirm, if you log into the console of this problem server and launch the application does it work?
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compoohCommented:
I believe the issue is caused by a seamless flag.  I would suggest temporarily adding the regkey to disable all seamlessflags.  After a reboot, retest.  If the app works, ther's a flag causing this issue.  You will need to narrow down the specific flag and disable it.  There's a Citrix dic on how to do this:

http://support.citrix.com/article/CTX101644
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compoohCommented:
Citrix doc not dic - dang iPhone
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