![]() ![]() You must reboot the VDA to have the changes take effect.Value: badapp1.exe badlongname.ex badapp2.exe Key: HKLM\SYSTEM\CurrentControlSet\services\CtxUvi You can completely disable all Citrix Hooking (including MfApHook.dll and MfApHook64.dll) on XenDesktop/XenApp 7.9 and later for specific applications by creating the following registry value: XenDesktop/XenApp 7.9 and later utilizes Kernel APC Hooking as a replacement of AppInit_DLLs used in previous versions of the products. NOTE: This value can be combined with existing flag bits except 0x2įor Xenapp and XenDesktop version 7.9 and newer: Key: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\CtxHook\AppInit_Dlls\ \ Key: HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\CtxHook\AppInit_Dlls\\ To minimize the impact and risk, if you know which hook dll is responsible for the issue, then apply the following flag to exclude that specific hook dll from that problem process.įor each process to be excluded from hooking by, please create the following keys: Note: The above step will stop all citrix hook dlls from getting loaded into the specified process, which may cause some side effects. is replaced with the name of the relevant registry key for example Smart Card Redirection is controlled by the key “Smart Card Hook”.Īn alternative to setting each value Flag to zero, is to remove the Hook DLL subkey from HKLM\SOFTWARE\Citrix\CtxHook\AppInit_Dlls, and then reboot. HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\CtxHook64\AppInit_Dlls\ HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\CtxHook\AppInit_Dlls\ HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\CtxHook\AppInit_Dlls\ You can disable a specific Citrix API hook, corresponding to an associated feature, for all processes by creating the following registry values: For the 32-bit version Key: HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\CtxHook\AppInit_Dlls\ Note: The CtxHook64 key does not exist on Windows 2008 R2 or higher and it is not required. Value: badapp1.exe,badapp2.exe,badapp3.exe HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\CtxHook64 HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\CtxHook HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\CtxHook Value: badapp1.exe,badapp2.exe,badapp3.exe For Windows 64-bit version Key: HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\CtxHook ![]() You can disable all Citrix API hooks for a single executable file by creating the following registry values: For Windows 32-bit version Renaming an API hook DLL to disable it is not supported.Caution! Refer to the Disclaimer at the end of this article before using Registry Editor.
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