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KB-9492: Citrix registry keys are cleared after uninstalling Suite 2014 Direct Audit agent on Windows

Auditing and Monitoring Service ,  

22 November,17 at 09:35 AM

Problem: 

Uninstalling Centrify Suite 2014 Direct Audit agent on Windows will clear some of the registry keys of Citrix. 

Before the uninstallation: 

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows] 
"AppInit_DLLs"="C:\\PROGRA~2\\Citrix\\System32\\mfaphook64.dll " 
"LoadAppInit_DLLs"=dword:00000001 

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Windows] 
"AppInit_DLLs"="C:\\PROGRA~2\\Citrix\\System32\\mfaphook.dll " 
"LoadAppInit_DLLs"=dword:00000001 

After the uninstallation: 

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows] 
"AppInit_DLLs"= <%This key value is being clear out> 
"LoadAppInit_DLLs"=dword:00000000 

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Windows] 
"AppInit_DLLs"= <%This key value is being clear out> 
"LoadAppInit_DLLs"=dword:00000000 


Cause: 

This is a known issue that uninstalling Suite 2014 Windows DA agent or upgrading to Suite 2014 Windows DA agent will modify these keys. 


Resolution: 

There is a fix addressed in a Suite 2014.1 one-off as well as Suite 2015. 

The end user has two options to fix this problem.

1. Upgrade to Suite 2014.1 one-off. 
2. Upgrade all the DA components to Suite 2015 or later. 

Note:
Please contact Centrify Support for the one-off package. And ensure the Citrix key values have been manually restored to the original before the upgrade. 

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