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A Third party App crashes VDA when SHAppBar Hook is added.

Srikanth Tirumal


Hello Carl, we have a 3rd part App which needs to have this CTXHOOK for a Seamless App Bar.

This application is published via Numecent Paging, on a Server OS (WIn 2016) and when loaded, it adds this this reg key:

Name: FilePathName Type: REG_SZ
Data: shappbarhook.dll


This is normal as per advised by the Citrix Seamless Configuration documentation- https://support.citrix.com/article/CTX101644

When this loads, it crashes the ServerOS VDA, and other users on the Server are kicked out.


I need to find a way that this REG applies Only that specific .exe and not to any other application. I am yet to raise a CITRIX ticket also for this issue.

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Could you please double check that you are setting all the below registry values? If not, please try adding these values in HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\CtxHook\AppInit_Dlls\SHAppBar Hook


Name: FilePathName
Type: REG_SZ
Data: shappbarhook.dll

Name: Flag
Data: 4

Name: Settings
Data: 1

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