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Terminal Server & XenApp Tuning Tips

 

Working in SBC environments for some years now I've used some best practices documents like the well known Methodology In a Box (MIAB) from Rick Delingher.
These documents, although really pertinent, are now quite outdated and do not include the latest OS and XenApp releases.
The purpose of this article is an attempt to summarize all Tuning Tips I've found (and also that I'm using) and describe the target operating system / XenApp version(s) they're working for.
Do not hesitate to give us your comments for this Article to be updated with your experience and feedback.
Please note that these informations are provided "as is" and that using these tips is at your own risks.
Please also Note that all REG_DWORD values are provided in decimal format.
All Registry Hives are provided for x86 platforms. For x64 Platforms, do not forget to add "WoW6432Node" if hive is in HKLM\Software.
 
Operating System Tuning for XenApp / Terminal Services
 
Registry Hive
Value
Type
Data
Purpose(s)
Platform(s)
HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\parameters
 DisableDHCPMediaSense
 REG_DWORD
 1
Disables Windows AutoSense
 W2K / W2K3 / W2K8 
HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\parameters
 KeepAliveTime
 REG_DWORD
 60000
Determines how often TCP sends keep-alive transmissions
 W2K / W2K3 / W2K8 
HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\parameters
 KeepAliveInterval
 REG_DWORD
 100
Determines how often TCP repeats keep-alive transmissions when no response is received
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\parameters
 TcpMaxDataRetransmissions
 REG_DWORD
 10
Determines how many times TCP retransmits an unacknowledged data segment on an existing connection
 W2K / W2K3 / W2K8
HKLM\SOFTWARE\microsoft\Windows NT\CurrentVersion\Winlogon
 WaitForNetwork
 REG_DWORD
 1
Enables Netlogon to wait for the Network to be active
 W2K3 / W2K8
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug
 Debugger
 REG_SZ
 Nothing ("")
Disables Dr Watson
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\wuauserv
 Start
 REG_DWORD
 4
Disables Windows Update Service
 W2K / W2K3 / W2K8
HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\VisualEffects
 VisualFXSetting
 REG_DWORD
 2
Sets Visual effects to "Optimize for Best Performances"
 W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Print\Providers
 EventLog
 REG_DWORD
 0
Disables Logging of Print Events
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\Spooler
 ErrorControl
 REG_DWORD
 2
Disable Spooler errors from being displayed on the server console
 W2K / W2K3 / W2K8
HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System
 DontDisplayLastUserName
 REG_DWORD
 1
Removes Display of Last Username
 W2K / W2K3 / W2K8
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
 DeleteRoamingCache
 REG_DWORD
 1
Deletes the Roaming Profiles cache after Logoff
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Windows
 ErrorMode
 REG_DWORD
 2
Disables Console error Messages
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\EventLog\Application
 MaxSize
 REG_DWORD
 2097152
Sets Application Event's Log maximum size to 2048
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\EventLog\Application
 Retention
 REG_DWORD
 0
Sets Circular Events logging
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\EventLog\Security
 MaxSize
 REG_DWORD
  2097152
Sets Security Event's Log maximum size to 2048
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\EventLog\Security
 Retention
 REG_DWORD
 0
Sets Circular Events logging
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\EventLog\System
 MaxSize
 REG_DWORD
  2097152
Sets System Event's Log maximum size to 2048
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\EventLog\System
 Retention
 REG_DWORD
 0
Sets Circular Events logging
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp
 fDisableCpm
 REG_DWORD
 1
Disables Terminal Server Client Printers Mapping. This ensures that admin won't upload print drivers when connecting to any server for Administration purposes
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\CiSvc
 Start
 REG_DWORD
 4
Disables the Indexing Service
 W2K / W2K3 
HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon
 BufferPolicyReads
 REG_DWORD
 1
Optimizes GPO Execution when Opportunistic Locks are Disabled
 W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server
 IdleWinStationPoolCount
 REG_DWORD
 4
Raises the Number of ICA / RDP Listeners
 W2K
HKLM\System\CurrentControlSet\Control\Keyboard Layout
 IgnoreRemoteKeyboardLayout
 REG_DWORD
 0
Disabled the Ignore of remote keyboards layouts
 W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\FileSystem
 NtfsDisableLastAccessUpdate
 REG_DWORD
 1
Sets NTFS not to update the last-access timestamp on each directory when it lists the directories on an NTFS volume
 W2K / W2K3 / W2K8
 HKLM\SYSTEM\CurrentControlSet\Control\PriorityControl
 Win32PrioritySeparation
 REG_DWORD
 38
Foreground application more reponsive than background
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
 LargeSystemCache
 REG_DWORD
 1
Provides a large virtual address space for the cache.
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
 IoPageLockLimit
 REG_DWORD
 65536
Specifies the maximum number of bytes that can be locked for I/O operations
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
 DisablePagingExecutive
 REG_DWORD
 1
Drivers and the kernel must remain in physical memory
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\UserOverride\Control Panel\Desktop
 AutoEndTasks
 REG_SZ
 1
Determines whether user processes end automatically when the user either logs off.
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\UserOverride\Control Panel\Desktop
 WaitToKillAppTimeout
 REG_SZ
 20000
Determines how long the system waits for user processes to end after the user attempts to log off
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\UserOverride\Control Panel\Desktop
 MenuShowDelay
 REG_SZ
 10
Changes the Start menu display interval
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\UserOverride\Control Panel\Desktop
 CursorBlinkRate
 REG_SZ
 -1
Specifies how much time elapses between each blink of the selection cursor
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\UserOverride\Control Panel\Desktop
 DisableCursorBlink
 REG_DWORD
 1
Enables / Disables Cursor BLink
 W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\UserOverride\Control Panel\Desktop
 DragFullWindows
 REG_SZ
 0
Specifies what appears on the screen while a user drags a window / Only the outline of the window moves
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\UserOverride\Control Panel\Desktop
 SmoothScroll
 REG_DWORD
 0
Scrolls using smooth scrolling
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\UserOverride\Control Panel\Desktop
 Wallpaper
 REG_SZ
 (none)
Sets Wallpaper to "None"
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\UserOverride\Control Panel\Desktop\WindowsMetrics
 MinAnimate
 REG_SZ
 0
Disabled. Window does not animate while being resized
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\UserOverride\Control Panel\Desktop
 InteractiveDelay
 REG_DWORD
 40
Optimizes Explorer and Start Menu responses Times
 W2K / W2K3 / W2K8
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters
 MaxWorkItems
 REG_DWORD
 512
Server Service Optimization
 W2K / W2K3 / W2K8
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters
 MaxMpxCt
 REG_DWORD
 2048
Server Service Optimization 
 W2K / W2K3 / W2K8
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters
 MaxFreeConnections
 REG_DWORD
 100
Server Service Optimization
 W2K / W2K3 / W2K8
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters
 MinFreeConnections
 REG_DWORD
 32
Server Service Optimization
 W2K / W2K3 / W2K8
HKLM\System\CurrentControlSet\Services\LanmanWorkstation\Parameters
 MaxCmds
 REG_DWORD
 2048
Increases Network capacity
 W2K / W2K3 / W2K8
HKLM\System\CurrentControlSet\Services\LanmanWorkstation\Parameters
 UtilizeNTCaching
 REG_DWORD
 0
Disable Caching
 W2K / W2K3 / W2K8
HKLM\System\CurrentControlSet\Services\LanmanWorkstation\Parameters
 MaxThreads
 REG_DWORD
 17
Maximum Concurrent Threads
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\MRXSmb\Parameters
 OplocksDisabled
 REG_DWORD
 1
Disables Opportunistic Locking
 W2K / W2K3 / W2K8
HLM\SYSTEM\CurrentControlSet\Services\Lanmanworkstation\Parameters
 UseOpportunisticLocking
 REG_DWORD
 0
Disables Opportunistic Locking 
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\Lanmanserver\Parameters
 EnableOplocks
 REG_DWORD
 0
Disables Opportunistic Locking  
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\lanmanserver\Parameters
 Size
 REG_DWORD
 3
Optimizes Network Performances for Applications (Along with LargeSystemCache)
 W2K / W2K3 / W2K8
HKLM\System\CurrentControlSet\Control\Session Manager
 RegistryLazyFlushInterval
 REG_DWORD
 30
Registry Flush Interval
 W2K / W2K3 / W2K8
HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{44BBA840-CC51-11CF-AAFA-00AA00B6015C}
 StubPath
 REG_SZ
 ""
Disable Outlook Express Icon Creation
 W2K / W2K3
HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{7790769C-0471-11d2-AF11-00C04FA35D02}
 StubPath
  REG_SZ
 ""
Disable Windows Address Book Icon Creation
 W2K / W2K3
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
 DefaultDomainName
 REG_SZ
 YourDefaultDomain
Sets Default Logon Domain
 W2K / W2K3 / W2K8
HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services
 WFDontAppendUserNameToProfile
 REG_DWORD
 1
Allow Mandatory Profiles Configuration via GPO.  This Setting needs KB908011 or W2K3 SP2 to be installed on each Server
 W2K3
HKLM\SOFTWARE\Policies\Microsoft\Internet Explorer\Restrictions
 RestGoMenu
 REG_DWORD
 1
Disable 'Mail and News' Menu from Internet Explorer
 W2K / W2K3 / W2K8
HKLM\SYSTEM\CurrentControlSet\Services\BNNS\Parameters
 EnableOffload
 REG_DWORD
 0
Recommend Performance Best Practice when Your XenApp Servers are Deployed via Provisioning Server
 
Along with these registry settings, do not forget to install UPHClean (W2K / W2K3) to manage profiles at logoff and ensure no lock will remain leading to profiles corruption and long logoff times.
UPHClean is natively embedded into Windows 2008 and later (User Profile Service).
 Also, as a Best Practice, it is recommended to Disable Data Execution Prevention on Windows 2003 and Windows 2008.
To do so, you have to modify the boot.ini file or use one of the following command line(s)
  • For Windows 2003 : bootcfg.exe /raw /fastdetect /noexecute=AlwaysOff /ID 1
  • For Windows 2008 : bcdedit.exe /set {current} nx AlwaysOff
 
 
Additional Windows Explorer Tuning
 
The following Tuning Values are an extract from an Helge Klein blog post and were added on June, 1rst 2009 (Thanks to Laurent Falguiere for pointing these settings in his comment)
 
Registry Hive
Value
Type
Data
Purpose(s)
Platform(s)
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
 UseDesktopIniCache
 REG_DWORD
 1
http://support.microsoft.com/kb/840309/EN-US
 W2K3 / W2K8
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
 NoRemoteRecursiveEvents
 REG_DWORD
 1
http://support.microsoft.com/?scid=kb%3Ben-us%3B330929&x=9&y=10
 W2K3 / W2K8
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
 NoRemoteChangeNotify
 REG_DWORD
 1
http://support.microsoft.com/?scid=kb%3Ben-us%3B812669&x=14&y=12
 W2K3 / W2K8
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
 StartRunNoHOMEPATH
 REG_DWORD
 1
http://support.microsoft.com/?scid=kb%3Ben-us%3B264061&x=18&y=9
 W2K3 / W2K8
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
 NoRecentDocsNetHood
 REG_DWORD
 1
http://support.microsoft.com/?scid=kb%3Ben-us%3B264061&x=18&y=9
 W2K3 / W2K8
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
 NoDetailsThumbnailOnNetwork
 REG_DWORD
 1
http://support.microsoft.com/?scid=kb%3Ben-us%3B830903&x=17&y=18
 W2K3 / W2K8
HKLM\System\CurrentControlSet\Services\MRXSmb\Parameters
 InfoCacheLevel
 REG_DWORD
 16
http://support.microsoft.com/kb/834350/EN-US
 W2K3 / W2K8
HKCR\*\shellex\PropertySheetHandlers\CryptoSignMenu
 SuppressionPolicy
 REG_DWORD
 65536
http://support.microsoft.com/kb/829700/EN-US
 W2K3 / W2K8
HKCR\*\shellex\PropertySheetHandlers\{3EA48300-8CF6-101B-84FB-666CCB9BCD32}
 SuppressionPolicy
 REG_DWORD
 65536
http://support.microsoft.com/kb/829700/EN-US
 W2K3 / W2K8
HKCR\*\shellex\PropertySheetHandlers\{883373C3-BF89-11D1-BE35-080036B11A03}
 SuppressionPolicy
 REG_DWORD
 65536
http://support.microsoft.com/kb/829700/EN-US
 W2K3 / W2K8
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\explorer\SCAPI
 Flags
 REG_DWORD
 1051650
http://support.microsoft.com/kb/829700/EN-US
 W2K3 / W2K8
HKLM\\SYSTEM\CurrentControlSet\Control\Session Manager
 SafeDllSearchMode
 REG_DWORD
 1
http://support.microsoft.com/kb/306850/EN-US
 W2K
HKLM\\SYSTEM\CurrentControlSet\Control\Session Manager
 SafeProcessSearchMode
 REG_DWORD
 1
http://support.microsoft.com/?scid=kb%3Ben-us%3B905890&x=13&y=9
 W2K3 / W2K8
 
 
XenApp Tuning
 
Registry Hive
Value
Type
Data
Purpose(s)
Platform(s)
HKLM\Software\Citrix\Print
 DefaultPrnFlags
 REG_DWORD
 134217728
Disables Logging of Print Events
 XenApp 4.X / 5.X
HKLM\Software\Citrix\Print
 DefaultPrnFlags
 REG_DWORD
 536870912
Ensures Autocreated printers ACL are always enforced
 XenApp 4.X / 5.X 
HKLM\Software\Citrix\IMA\LMS
 EnableTranslation
 REG_DWORD
 1
Ensures IMA LMS will work on MUI Operating Systems
 XenApp 4.0
HKLM\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI
 LangBarDeminimizerFlags
 REG_DWORD
 1
Hides the Language bar if it is not needed
 XenApp 4.X / 5.X 
HKLM\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI
 SeamlessFlags
 REG_DWORD
 524288
Won't Sync the WorkArea within Seamless Application : Application's Title Bar will be "normal" when accessed from clients using the Windows XP / Vista Themes 
 XenApp 4.X / 5.X 
HKLM\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI
 LogoffCheckSysModules
 REG_SZ
 wistpis.exe
Specified modules will be forced to unload when the published application will be exited
 XenApp 4.X / 5.X 
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\ICA-Tcp\UserOverride\Control Panel\Desktop
 AutoEndTasks
 REG_SZ
 1
 Determines whether user processes end automatically when the user either logs off.
 XenApp 4.X / 5.X
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\ICA-Tcp\UserOverride\Control Panel\Desktop
 WaitToKillAppTimeout
 REG_SZ
 20000
Determines how long the system waits for user processes to end after the user attempts to log off
 XenApp 4.X / 5.X
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\ICA-Tcp\UserOverride\Control Panel\Desktop
 MenuShowDelay
 REG_SZ
 10
Changes the Start menu display interval
 XenApp 4.X / 5.X
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\ICA-Tcp\UserOverride\Control Panel\Desktop
 CursorBlinkRate
 REG_SZ
 -1
Specifies how much time elapses between each blink of the selection cursor
 XenApp 4.X / 5.X
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\ICA-Tcp\UserOverride\Control Panel\Desktop
DisableCursorBlink
REG_DWORD
 1
Enables / Disables Cursor Blink
XenApp 4.X / 5.X
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\ICA-Tcp\UserOverride\Control Panel\Desktop
 DragFullWindows
 REG_SZ
 0
Specifies what appears on the screen while a user drags a window / Only the outline of the window moves
 XenApp 4.X / 5.X
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\ICA-Tcp\UserOverride\Control Panel\Desktop
 SmoothScroll
 REG_DWORD
 0
Scrolls using smooth scrolling
 XenApp 4.X / 5.X
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\ICA-Tcp\UserOverride\Control Panel\Desktop
 Wallpaper
 REG_SZ
 (none)
Sets Wallpaper to "None" 
 XenApp 4.X / 5.X
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\ICA-Tcp\UserOverride\Control Panel\Desktop\WindowsMetrics
 MinAnimate
 REG_SZ
 0
Disabled. Window does not animate while being resized 
 XenApp 4.X / 5.X
HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\ICA-Tcp\UserOverride\Control Panel\Desktop
 InteractiveDelay
 REG_DWORD
 40
Optimizes Explorer and Start Menu responses Times
 XenApp 4.X / 5.X
HKLM\SYSTEM\CurrentControlSet\Services\CTXCPUREBal
 Start
 REG_DWORD
 2
On Enterprise Servers Only, with Multiples CPU Only. Enables the "Citrix CPU Rebalancing Service" which is responsible for spreading non multi cpu applications loads to all CPUs.
 XenApp 4.X / 5.X
 
User Profile Tuning
 
The following settings are designed to tune the Default user profile. I'm mainly using them within Mandatory Profiles or Template Profile for Citrix Portable Profiles.
 
Registry Hive
Value
Type
Data
Purpose(s)
HKCU\Control Panel\Desktop
 AutoEndTasks
 REG_SZ
 1
 Determines whether user processes end automatically when the user either logs off.
HKCU\Control Panel\Desktop
 WaitToKillAppTimeout
 REG_SZ
 20000
Determines how long the system waits for user processes to end after the user attempts to log off
HKCU\Control Panel\Desktop
 MenuShowDelay
 REG_SZ
 10
Changes the Start menu display interval
HKCU\Control Panel\Desktop
 CursorBlinkRate
 REG_SZ
 -1
Specifies how much time elapses between each blink of the selection cursor
HKCU\Control Panel\Desktop
 DisableCursorBlink
 REG_DWORD
 1
Enables / Disables Cursor Blink
HKCU\Control Panel\Desktop
 DragFullWindows
 REG_SZ
 0
Specifies what appears on the screen while a user drags a window / Only the outline of the window moves
HKCU\Control Panel\Desktop
 SmoothScroll
 REG_DWORD
 0
Scrolls using smooth scrolling
HKCU\Control Panel\Desktop
 Wallpaper
 REG_SZ
 (none)
Sets Wallpaper to "None" 
HKCU\Control Panel\WindowsMetrics
 MinAnimate
 REG_SZ
 0
Disabled. Window does not animate while being resized 
HKCU\Control Panel\Desktop
 InteractiveDelay
 REG_DWORD
 40
Optimizes Explorer and Start Menu responses Times
HKCU\\Software\Microsoft\Windows\CurrentVersion\Explorer\VisualEffects
 VisualFXSetting
 REG_DWORD
 2
Sets Visual effects to "Optimize for Best Performances"
HKCU\Software\Microsoft\Internet Explorer\Main
 Force Offscreen Composition
 REG_DWORD
 1
Force Internet Explore to use Offscreen Composition
HKCU\Software\Microsoft\CTF
 Disable Thread Input Manager
 REG_DWORD
 1
Disables Language Bar 1/4
HKCU\Software\Microsoft\CTF\LangBar
 ExtraIconsOnMinimized
 REG_DWORD
 0
Disables Language Bar 2/4
HKCU\Software\Microsoft\CTF\LangBar
 ShowStatus
 REG_DWORD
 2
Disables Language Bar 3/4
HKCU\Software\Microsoft\CTF\MSUTB
 ShowDeskBand
 REG_DWORD
 1
Disables Language Bar 4/4
 
 
XenApp Client Tuning
 
The following settings are designed to tune / debug the XenApp / XenDesktop ICA Client. These tips are extracted from an article originally published on Jim Moyle's Blog. I'd like to thank him for contacting me and asking me to add them to our existing tuning Article.
 
Description
Key
Value Name
Value
Automatically repair clipboard chain
CTX112434
HKEY_LOCAL_MACHINE\SOFTWARE \Citrix\ICA Client\Engine\Configuration\Advanced \Modules\WFClient
CbChainInterval
<value> 0-2000 valid
Prevent long logon script time breaking session sharing
HKEY_LOCAL_MACHINE\SOFTWARE \Citrix\ICA Client\Engine\Configuration\Advanced \Modules\WFClient\
ucConnTimeout
<string value> needs to be >20
Log the Launch.ica file to a Client Local File
CTX115304
HKEY_LOCAL_MACHINE\SOFTWARE \Citrix\ICA Client\Engine\Configuration\Advanced \Modules\Logging
LogFile=<path to file to log to that you want, use following format C:\ica\ica.log>
LogICAFile=true
Disable selected virtual channels from the client side
CTX116890
HKEY_LOCAL_MACHINE\SOFTWARE \Citrix\ICA Client\Engine\Configuration\Advanced \Modules\ICA 3.0
Remove relevant value
 
Revert to 9.x printing behaviour for a specific driver
CTX115553
HKEY_LOCAL_MACHINE\Software \Citrix\ICA Client
ReprocessEMFDriverList
<driver name>
Allow more than 20 client files open from a client mapped drive
HKEY_LOCAL_MACHINE\ SOFTWARE\Citrix\ICA Client\Engine\Configuration\Advanced \Modules\ClientDrive
MaxOpenContext
<value> eg 50
Prevent a seamless window from permanently hiding a minimized taskbar
HKEY_LOCAL_MACHINE\ SOFTWARE\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Seamless Windows
TWIShrinkWorkArea
Value: 5
Allow Custom Virtual Channels in ICA after upgrading from an earlier client
HKEY_LOCAL_MACHINE\ SOFTWARE\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Third Party\CustomVC
VirtualChannels
“”
How to use print screen in ICA sessions
HKEY_LOCAL_MACHINE\ SOFTWARE\Citrix\ICA Client\Engine\Configuration\Advanced \Modules\WFClient
ICAPrntScrnKey
<value> eg F12
Make a seamless window the focus as soon as it activates
HKEY_LOCAL_MACHINE\ Software\Citrix\ICA Client\Engine\Configuration\Advanced \Modules\WFClient
TWISeamlessFlag
1
 
Microsoft Office Tuning
 
The following settings are designed to tune Microsoft Office Applications for Terminal services / XenApp Use.
To use with your Office Version, Replace the #OfficeVersion# token with :
  • 9.0 for Microsoft Office 2000
  • 10.0 for Microsoft Office XP
  • 11.0 for Microsoft Office 2003
  • 12.0 for Microsoft Office 2007
When a token is not specified that's because the Tip do not apply to all versions
 
Registry Hive
Value
Type
Data
Purpose(s)
HKLM\Software\Microsoft\Office\11.0\Excel\Options
 AlwaysSaveToCurrentPath
 REG_DWORD
 1
Always Save in Current Path(Even Remote Documents)
HKLM\Software\Policies\Microsoft\Office\#OfficeVersion#\Word\Options\vpref
 fSplBkg_99_1
 REG_DWORD
 0
Word : Disables Check Spelling as You Type
HKLM\Software\Policies\Microsoft\Office\#OfficeVersion#\Word\Options
 fGramBkg_535_1
 REG_DWORD
 0
Word : Disables Check Grammar as You Type
HKLM\Software\Policies\Microsoft\Office\#OfficeVersion#\Word\Options\Assist
 fCorrectTyping_16_1
 REG_DWORD
 0
Word : Disables Text Replacement As You Type
HKLM\Software\Policies\Microsoft\Office\#OfficeVersion#\Excel\Options
 fAnimationsOK_129_1
 REG_DWORD
 0
Excel : Disables Provide a Feedback With Animation
HKLM\SYSTEM\Software\Policies\Microsoft\Office\#OfficeVersion#\PowerPoint\Options
 Background spell checking
 REG_DWORD
 0
Powerpoint : Disables Check Spelling as You Type
HKLM\Software\Microsoft\Office\11.0\Common\Open Find\Places\StandardPlaces\Desktop
 Show
 REG_DWORD
 0 or 1
 Manages the Display of the Desktop link Within Office Places Bar
HKLM\Software\Microsoft\Office\11.0\Common\Open Find\Places\StandardPlaces\MyComputer
 Show
 REG_DWORD
 0 or 1
 Manages the Display of the My Computer link Within Office Places Bar
HKLM\Software\Microsoft\Office\11.0\Common\Open Find\Places\StandardPlaces\MyDocuments
 Show
 REG_DWORD
  0 or 1
 Manages the Display of the My Documents link Within Office Places Bar
HKLM\Software\Microsoft\Office\11.0\Common\Open Find\Places\StandardPlaces\Publishing
 Show
 REG_DWORD
  0 or 1
 Manages the Display of the Network Locations link Within Office Places Bar
HKLM\Software\Microsoft\Office\11.0\Common\Open Find\Places\StandardPlaces\Recent
 Show
 REG_DWORD
  0 or 1
 Manages the Display of the Recent Documents link Within Office Places Bar
 

posted on Saturday, May 23, 2009 3:15 PM by Pierre Marmignon    

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COMMENTS

We just saw an instance where a .NET application, Peachtree 2009 and 2010 would NOT load screens due to the CursorBlinkRate being changed. It took us over 100 hours of time with more then 40 hours on the phone with Peachtree to narrow it down and find it. Setting it breaks the Peachtree application and it's related to those screens being written in .NET.

Just posting this as many of our optimizations came from this site for our Terminal Server environment. Beware!

Thanks,
Bill Sorenson
bsorenson@ivdesk.com
www.IVDesk.com

posted @ Friday, July 24, 2009 8:37 PM by bsorenson

Dear Bill,

Sorry for the side effects you've encountered.

I've never seen such a problem with the Cursor Blink Rate being modified in years of use.

Thanks for your feedback.

Best Regards,

Pierre

posted @ Friday, July 24, 2009 9:04 PM by Pierre Marmignon

i remember that there was a guy who made an adm template with these settings so u can enforce them via gpo , is that still available ? and did he updated it ?

posted @ Wednesday, August 12, 2009 12:31 PM by Sam

Hi,

Yes there is an adm with these settings. You can find it on The XenApp Blog

Pierre

posted @ Wednesday, August 12, 2009 12:37 PM by Pierre Marmignon

Alexander Ervik has also released an admx template with these tuning settings.

The Admx file is available at Ervik.as

posted @ Thursday, August 20, 2009 11:47 AM by Pierre Marmignon

Hi Pierre,
I remeber from the old Methodology in a Box from DABCC that the HKLM\SYSTEM\CurrentControlSet\Control\PriorityControl Win32PrioritySeparation should be set to backgroung process (value of 24) rather than foregroung (value of 38) because of the way sessions are managed. would it be possible to investigate a little more on that settings? BTW it is possible to change that setting via Start -> Settings -> Control Panel -> System -> Advanced Tab -> Performance Options
-> Set Application response to ‘Background services’

Regards,
FD

posted @ Tuesday, September 01, 2009 11:10 AM by FD

Dear FD, Yes you're right !

I've always set it to optimize "For applications" (even if other articles were saying to set it to "Background Services") because even it's not a "ideal" setting for Terminal Server / XenApp Servers it boosts the CPU Scheduling.

However, for some XenApp requirements, you could have to set it back to "BackGround Services".

You can read this nice article about it from Jeremy Saunder's about it !

Best Regards,

Pierre

posted @ Tuesday, September 01, 2009 5:16 PM by Pierre Marmignon

Hi

Thanks for this post.

For me HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\VisualEffects

doesn't work.(option box doesnt changed in advanced settings)

But I try in HKCU, and here it works fine. (option box are well Displayed in advanced settongs)

Do you think it's just the display or settings are in HKCU ?


Bye

Vincent

posted @ Tuesday, September 29, 2009 4:15 PM by vvuccino

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