Citrix TechEdge 2014 - Citrix Group Policy Troubleshooting for XenApp and XenDesktop

Citrix Group Policy Troubleshooting for XenApp and XenDesktop

Rick Berry, Senior Escalation EngineerCitrix Synergy, May 2014

SYN406

© 2014 Citrix. Confidential.2

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Citrix Group Policy ArchitectureOverview of Citrix Group Policy and Components


Citrix Group Policy ArchitecturePolicy Application Terminology

Local Group Policies• Local GPO containing Computer and User settings

Citrix Farm Policies• Also known as IMA farm policies (XenApp)• Set via AppCenter\DSC (XenApp 6.x) or Studio (XenDesktop\XenApp 7.5)• Stored in the farm datastore\database

Active Directory Policies• Set via Site, Domain or OU GPO’s• Stored in Active Directory• Allows combining of Citrix and Microsoft Policies


Local Policies

Citrix Farm\IMA Polices

Active Directory Site GPO

Active Directory Domain GPO

Active Directory OU GPO

Citrix Group Policy ArchitectureProcessing and Precedence for RSOP

Processing

Precedence

RSOP will have

CDM = Enabled

CDM = Disabled


Citrix Group Policy ArchitectureCitrix Group Policy Management Console

Citrix GPMC - A connector into the Microsoft GPMC

Management of Citrix group policies via AppCenter\Studio or GPMC

Allows Citrix policy modeling\comparison

Can be installed for standalone use

Core binaries are in:• %PROGRAMFILES% and %PROGRAMFILES(x86)%• Under \Citrix\Group Policy\Management


Citrix Group Policy ArchitectureCitrix Group Policy Client Side Extension

Also known as Citrix CSE (CitrixCseClient.dll)

Loaded via Microsoft Winlogon process

Generates policy requests (Computer\User)

Retrieves values to determine policy filter calculation

Forwards policy requests to Citrix Caching Service

Core binaries are in:• %PROGRAMFILES% and %PROGRAMFILES(x86)%• Under \Citrix\Group Policy\Client-Side Extension


Citrix Group Policy ArchitectureCitrix Group Policy Caching Service

Citrix Group Policy Engine service (CitrixCseEngine), part of Citrix CSE

Performs the Citrix policy calculation and writes settings to the registry

Caches Group Policy files between calculations to avoid excessive network traffic

GPO (AD\Farm) Local Cache:• %PROGRAMDATA%\CitrixCseCache

Also caches per-computer and per-user data files


Citrix Group Policy ArchitectureData Files - Resultant Set of Policy (RSOP)

Per-Computer and Per-User resultant Citrix policy settings end up in RSOP.gpf

These binary files are cached in:• Per-Computer → %PROGRAMDATA%\CitrixCseCache• Per-User → %PROGRAMDATA%\CitrixCseCache\<SessionID>

Files are used to create policy registry settings under:• Per-Computer → HKLM\Software\Policies\Citrix• Per-User → HKLM\Software\Policies\Citrix\<SessionID>\User


Citrix Group Policy ArchitectureData Files – Rollback

We needed a way to remove RSOP settings

Mechanism creates a Rollback.gpf file

Contains instructions to remove existing RSOP settings

These binary files are cached in: • Per-Computer → %PROGRAMDATA%\CitrixCseCache• Per-User → %PROGRAMDATA%\CitrixCseCache\<SessionID>


Citrix Group Policy ArchitectureCitrix Policy Filters

Allows granular control of Citrix policies

Filters policy settings based on certain criteria

Different options based on the policy category

Can’t be applied to the default Unfiltered policy


Policy FiltersComputer Policies


Policy FiltersUser Policies

Additional filter types

For User Policies


Citrix Group Policy ArchitectureUnfiltered Policy and Templates

There’s a default Unfiltered policy (contains no settings)

Unfiltered policy settings apply to all objects

Can be disabled if not needed (set to lowest priority)

There are pre-configured policy Templates in place

Templates grouped by end user connectivity (WAN, LAN)

Policies created can be saved as templates


Policy ManagementXenApp 6.x - XenDesktop 5.x

Separate

Computer and User

Policy Nodes


Policy ManagementXenApp 7.5 – XenDesktop 7.x

Single Policy Node


Citrix Group Policy ArchitectureCitrix Policy Update Intervals

For Citrix farm policies setup via AppCenter\Studio:• Citrix policies for Computer and Users (logged in) refresh every 90 minutes

For Citrix Policies set via AD GPO:• Leverage AD refresh interval (default is 90 minutes +\- a random offset of 0-30 minutes)• What is set via AD GPO

For either method:• Computer Policies update at machine startup• User Policies will also be updated during a reconnect to an active or disconnected session• Policies can be updated manually by running: gpupdate /force


User Policy Application (Similar for Computer)

WinLogonClient Side Extensions

Microsoft CSE

Citrix CSE

AD GPO

Local GPO

ResultantPolicy

RSOP.GPF

Local server

Registry

Farm or StudioGPO

Citrix CSE

HKLM\Software\Polices\Citrix\ (For Server) -or-HKLM\Software\Polices\Citrix\<SessionID>\User


Policy Application Details

Load existing Rollback.gpf

Rollback.gpf

Registry %PROGRAMDATA%\Citrix\GroupPolicy

-or- %PROGRAMDATA%\Citrix\GroupPolicy\<SessionID>

Apply RSOP

RSOP.gpf

Delete Cached

GPF files

RSOP.gpf

Rollback.gpf

Registry

Cache new files

RSOP.gpf

Rollback.gpf

Set time in LastUpdate

Under Events Registry Area

All Done!Rollback.gpf

Recommended Practices - TipsBased on Citrix Support cases

20


Recommended PracticesArchitecture

While supported, using both AD and Farm\Studio Citrix policies may cause confusion when troubleshooting issues• Try to use one type or the other depending upon requirements

Using WMI filters on AD GPO’s containing Citrix policies may cause issues during reconnects (due to WMI\AD timeouts)• Use WMI filters sparingly• Possible mitigation: using DisableGPCalculation setting


Recommended Practices Document Policies

For Farm (AppCenter\Studio) applied policies:• Written document\spreadsheet (Scout can provide as well)

For Active Directory applied policies:• Use the GPMC Save Report option on your AD GPO

For either of the above:• CtxCseUtil – RSOP reporting tool• Export using Citrix Group Policy PowerShell module


Recommended PracticesWhat Not To Do!

To prevent Citrix Group Policy consistency issues, don’t manually manipulate\remove any of the Citrix Group Policy data files on your own

This includes files\folders or reg entries under: • %PROGRAMDATA%\Citrix\GroupPolicy\<SessionID>• %PROGRAMDATA%\Citrix\GroupPolicy• HKLM\Software\Policies\Citrix\<SessionID>• HKLM\Software\Policies\Citrix

Might be needed for certain fixes (LA5051)

Troubleshooting Citrix Group Policy


Troubleshooting Citrix Group Policy Recommended Approach

Know your Baseline\Collect the Details

Determine Versions

Policy Cache

GPF Files

RSOP Registry Settings

Connection Information

Additional Data Points


Troubleshooting Citrix Group Policy Baseline and Collect Details – The Four W’s

Make sure you can answer the following:

Who is seeing the issue? What issue are they seeing?

Tokyo

Chicago

Miami


Troubleshooting Citrix Group Policy Baseline and Collect Details – The Four W’s

Make sure you can answer the following:

Who is seeing the issue? What issue are they seeing?When are they seeing the issue?Where are they seeing the issue?

New Session?Reconnecting?

Smooth Roaming?All of the Above?


Troubleshooting Citrix Group Policy Determine Versions

What version am I at??


Troubleshooting Citrix Group PolicyDetermine CSE Version

Look in the component directory

Check CitrixCseEngine.exe


Troubleshooting Citrix Group PolicyDetermine GPMC Version


Product Versions - ReferenceXenApp – Baseline (Updated)

Version Citrix GPMC Citrix CSE

6.0 1.0 1.0

6.5 1.5 (1.7) 1.5 (1.7)

7.5 2.2 2.1


Product Versions - ReferenceXenDesktop – Baseline (Updated)

Version Citrix GPMC Citrix CSE

5.5, 5.6 1.5 (1.7) 1.5 (1.7)

7.1 2.1 2.1

7.5 2.2 2.1


Policy CacheActive Directory Policies

Seeing {GUID} in the filename = AD GPO

The 0 here denotes User policy settings

The 1 here denotes a Computer policy


Policy CacheActive Directory Policies We have a match!!

We have a match!!


Policy CacheFarm\Studio Policies

Lack of {GUID} = Farm policies


GPF filesPer-Computer files

Per-User files

SessionID = 2


RSOP Registry SettingsPer-Computer (HKLM\Software\Policies\Citrix)


RSOP Registry SettingsPer-User (HKLM\Software\Policies\Citrix\<SessionID>)


Connection Information


Connection DetailsHKLM\Software\Citrix\ICA\Session


Troubleshooting Tools - CtxCseUtilCitrix RSOP Report Tool

Creates resultant set of policies report containing user settings, computer or both

Can be run locally or remotely against a server or VDA

Converts RSOP.gpf to HTML report

End user has to have logged in at some point

End user doesn’t have to be actively logged in


Troubleshooting Tools - CtxCseUtilCommon Errors

Solution: Run WinRm QuickConfigTypical error when first run…


Troubleshooting Tools - CtxCseUtilCtxCseUtil - Common Errors

Help Message.docx

Possible using Local Administrator Account?


Once run, resultant report is: CitrixRsopResult.html

Resultant Report - CitrixRsopResult.html

Troubleshooting Tools - CtxCseUtil


Citrix Group Policy PowerShell ModuleCitrix.GroupPolicy.Commands.psm1

Module containing cmdlets for Citrix Policies• Local, Farm or Active Directory

Needs to be imported via PowerShell prompt

Contains cmdlets to:• Set or Get Citrix policy settings• Export or Import Citrix policy objects

Policy Details Imported\Exported:• Policy Settings• Configuration Details• Filters


Citrix Group Policy PowerShell ModuleExporting Farm Policies

GET-COMMAND output


Citrix Group Policy PowerShell ModuleExporting Farm Policies

Once completed, these are your files

Export the policies


Use the same PowerShell Module and cmdlets

Connect to Active Directory GPO via New-PSDrive cmdlet

See CTX140039 for the details

Citrix Group Policy PowerShell ModuleExporting Citrix Policies from Active Directory

http://support.citrix.com/article/CTX140039


CDFControlCDF Tracing Tool


Farm\Studio Policy Issue

Farm policies stored in a single object

Likely related to corrupt policy

Error seen when accessing policies

Don’t restore datastore\database

Contact Citrix Technical Support

Maintain an updated policy export!!


WMI Related IssuesReconnect Issues

If using WMI Filters on AD GPO’s, might see reconnect issues• Citrix policies not applying for reconnected sessions• Logins\Reconnects taking long time to occur (does the issue resolve itself after some time?)

Enable Microsoft Group Policy logging:• HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Diagnostics\

"GPSvcDebugLevel"=dword:00030002

Log file will be in:• %WINDIR%\debug\usermode\gpsvc.log• If you see FilterCheck: Evaluate returned error. hr=0x80041069, AD is timing out on WMI call

Look in Event Viewer as well for WMI errors


Takeaways

Architecture and files related to Citrix Group PolicyHow Citrix policies apply during user login (computer too)Recommended practicesTroubleshooting methods and tools Documenting and backing up your policies is important!!

ResourcesLinks related to Citrix Group Policy

53


ResourcesCitrix Documentation Links

Citrix Product Documentation Site (eDocs)

Manage Citrix Policies (XenDesktop\XenApp 7.5)

Working with Citrix Policies (XenApp 6.5)

Policy Settings Reference (XenApp 6.5)

http://support.citrix.com/proddocs/topic/infocenter/ic-how-to-use.html



http://support.citrix.com/proddocs/topic/xenapp-xendesktop-75/cds-policies-wrapper-rho.html

http://support.citrix.com/proddocs/topic/xenapp65-admin/ps-policies-applying.html

http://support.citrix.com/proddocs/topic/xenapp65-admin/ps-ref-policies-wrapper-v2.html


Resources

CTX140268 - Citrix policy settings not being displayed properly in newer Citrix Group Policy Management Console

CTX127611 - How Citrix IMA Policies fit in to Microsoft GPO Processing and Precedence Model

CTX138537 – HRP02 for Citrix XenApp 6.5 (for DisableGPCalculation setting)

CTX130116 - Case Study: Unable to Apply Citrix Policies because of 0kb gpf Files

CTX134081 - Planning Guide - Citrix XenApp and XenDesktop Policies














ResourcesGroup Policy Tools

CTX140267 - Updated Citrix Group Policy PowerShell Module

CTX138533 - Citrix Policy Reporter - RSOP CtxCseUtil Tool

CTX140039 - How to Import and Export Policies in XenApp 6.x

CTX111961 – CDFControl

CTX130147 – Citrix Scout

MS TechNet – Group Policy Cmdlets for PowerShell

MS TechNet Blog – Enabling Group Policy Logging using RSAT






http://technet.microsoft.com/en-us/library/ee461027.aspx

http://blogs.technet.com/b/askds/archive/2008/07/18/enabling-group-policy-preferences-debug-logging-using-the-rsat.aspx

Questions and Wrap-Up


Questions?


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Citrix TechEdge 2014 - Citrix Group Policy Troubleshooting for XenApp and XenDesktop