Installation Manager showed a job status of failed when installing some Citrix Hotfixes on my PS4 Environment.
Google showed me this document: http://support.citrix.com/article/CTX108840
You can check if the installation of the citrix hotfix was succesful using this tool:
cpatch /i /[hotfix_name]
So far no problems have occurred and the patch seems to have installed correctly.

http://support.microsoft.com/kb/221833/en-us
The short version:
Use Registry Editor to add the following registry value (or modify it, if the value already exists):
Key: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon
Value: UserEnvDebugLevel
Value Type: REG_DWORD
Value Data: 10002 (Hexadecimal)
UserEnvDebugLevel can have the following values:
NONE 0×00000000
NORMAL 0×00000001
VERBOSE 0×00000002
LOGFILE 0×00010000
DEBUGGER 0×00020000
The default value is NORMAL|LOGFILE (0×00010001).
Note To disable logging, select NONE (where the value is 0X00000000).

Very handy tool and also freeware..works on registry, files etc etc.
SetACL: http://setacl.sourceforge.net/
SetACL is a set of routines for managing Windows permissions (ACLs) from the command line.
Supported object types: files and directories, registry keys, printers, services, network shares.
Manage permissions on local or remote systems in trusted or untrusted domains or workgroups.
Set multiple permissions for multiple users/groups [...]

Tired of going through the Start, Run, CMD process everytime..?
Just use your explorer to navigate to the correct folder and rightclick and you’ll see a “Open Command Window Here”
if you import this key:

REGEDIT4

[HKEY_CLASSES_ROOT\Directory\shell\cmd]
@=”Open Command Window Here”

[HKEY_CLASSES_ROOT\Directory\shell\cmd\command]
@=”cmd.exe /k \”cd %L\””

[HKEY_CLASSES_ROOT\Drive\shell\cmd]
@=”Open Command Window Here”

[HKEY_CLASSES_ROOT\Drive\shell\cmd\command]
@=”cmd.exe /k \”cd %L\””

A small organsation needed access to our Citrix servers. They had access to our LAN from a certain gateway put away on a deep dark spot in our network.
When they tried to connect to our servers, they would receive the “Server cannot be found” or similair messages but sometimes they would be able to connect!!!
Well..this [...]

Yep, this is turned off by default. To enable it, change or add this key:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ContentIndex]
“FilterFilesWithUnknownExtensions”=dword:00000001