VM's Power State Does Not Update And Shows As “Unknown” After vCenter Server Reboots

This is an issue with Citrix hypervisor communication library plugin since version Xenapp/XenDesktop version 7.16.

When vCenter server goes alive after reboot i.e “https://<vCenter FQDN>/sdk” becomes accessible, BrokerHostingPlugin still fails to login the vCenter server with exception “The session is not authenticated.”.

CDF Traces from Delivery Controller

,BrokerHostingPlugin,,0,,1,Information,”Attempting connection”,””

,BrokerHostingPlugin,,0,,1,Information,”***** Get Hypervisor Certificate for Connection to ‘https://<vCenter FQDN>/sdk​​​​​​​’ *****”,””

,BrokerHostingPlugin,,0,,1,Information,”Certificate is untrusted: False”,””

,BrokerHostingPlugin,,0,,1,Information,”Time elapsed to get the hypervisor certificate: xxms”,””

,BrokerHostingPlugin,,0,,1,Information,”***** Login Connection – 0 to ‘​​​​​​​https://<vCenter FQDN>/sdk’ as ‘#login_name#‘ *****”,””

,BrokerHostingPlugin,,0,,1,Information,”VMware plugin initialisation times: create service xms, content time xxxms, total xxxms”,””

,BrokerHostingPlugin,,0,,1,Information,”Connected to ‘VMware vCenter Server #vCenter version info#’“,””

,BrokerHostingPlugin,,0,,1,Error,”System.Web.Services.Protocols.SoapException: The session is not authenticated.

,BrokerHostingPlugin,,0,,1,Information,”Connection attempt threw exception System.Web.Services.Protocols.SoapException: The session is not authenticated.

,BrokerHostingPlugin,,0,,1,Information,”Connection is still down”,””

,BrokerHostingPlugin,,0,,1,Information,”Sleeping for 00:00:30 before trying to reconnect again”,””


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Client Drive Mapping Fails when File Size is Larger than 4GB

In XenApp and XenDesktop, very large files that have a file size greater than 4GB are not supported with Client Drive Mapping.

For Example, when viewing a file which is greater than 4GB using a published Windows Explorer instance in a XenApp Client Mapped Drive, file size will be incorrectly displayed.

The following error message might appear:

“The file <filename> is too large for the destination file system”

When copying a file with file size greater than 4GB using a CDM mapped drive, the file is partially copied, resulting in an incomplete target file being written.


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Director Version Matrix – Install or Upgrade compatibility of Director with Delivery Controller, VDA

Important: All new features of Director will be available and work as expected only in combination with the required minimum versions of the Delivery Controller (DC) and the VDA listed below.

Note: This article is applicable to XenApp 6.5 and later, XenDesktop 7 and later.

Director Version Features Dependency

(Min Version required)

1906 Session Auto Reconnect DC 7 1906 and VDA 1906 All
Session startup duration DC 7 1906 and VDA 1903 All
Desktop probing DC 7 1906 and Citrix Probe Agent 1903 Premium
7.9 and later Citrix Profile Management Duration in Profile Load VDA 1903 All
1811 Profile load DC 7 1811 and VDA 1811 All
Hypervisor Alerts Monitoring DC 7 1811 Premium
Application probing DC 7 1811 and Probe Agent 1811 Premium
Microsoft RDS license health DC 7 1811 and VDA 7.16 All
Key RTOP Data display DC 7 1811 and VDA 1808 Premium
1808 Export of Filters data DC 7 1808 and VDA 1808 All
Interactive Session drill down DC 7 1808 and VDA 1808
GPO drill down DC 7 1808 and VDA 1808
Machine historical data available using OData API DC 7 1808
7.18 Application probing DC 7.18 Platinum
Built-in alert policies
Health Assistant link None All
Interactive Session drill-down
7.17 PIV smart card authentication None All
7.16 Application Analytics DC 7.16 || VDA 7.15 All
OData API V.4 DC 7.16 All
Shadow Linux VDA users VDA 7.16 All
Domain local group support None All
Machine console access DC 7.16 All
7.15 Application Failure Monitoring DC 7.15 || VDA 7.15 All
7.14 Application-centric troubleshooting DC 7.13 || VDA 7.13 All
Disk Monitoring DC 7.14 || VDA 7.14 All
GPU Monitoring DC 7.14 || VDA 7.14 All
7.13 Application-centric troubleshooting DC 7.13 || VDA 7.13 Platinum
Transport protocol on Session Details panel DC 7.x || VDA 7.13 All
7.12 User-friendly Connection and Machine failure descriptions DC 7.12 || VDA 7.x All
Increased historical data availability in Enterprise edition Enterprise
Custom Reporting Platinum
Automate Director notifications with SNMP traps Platinum
7.11 Resource utilization reporting DC 7.11 || VDA 7.11 All
Alerting extended for CPU, Memory and ICA RTT conditions DC 7.11 || VDA 7.11 Platinum
Export report improvements DC 7.11 || VDA 7.x All
Automate Director notifications with Citrix Octoblu DC 7.11 || VDA 7.x Platinum
Integration with NetScaler MAS DC 7.11 || VDA 7.x

MAS version 11.1 Build 49.16
7.9 Logon Duration Breakdown DC 7.9 || VDA 7.x All
7.7 Proactive monitoring and alerting DC 7.7 || VDA 7.x Platinum
SCOM integration DC 7.7 || VDA 7.x || SCOM 2012 R2 || PowerShell 3.0 or later* Platinum
Windows Authentication Integration DC 7.x || VDA 7.x All
Desktop and Server OS Usage DC 7.7 || VDA 7.x Platinum

* Director and SCOM server must have the same PowerShell version

Upgrade sequence – XenApp and XenDesktop Components

Illustration of the upgrade sequence is as below. To upgrade all the installed components, run the installer on all the machines containing respective components.

User-added image

Note: Once DC is updated successfully, the Studio will prompt you to upgrade the Site. Complete this step for the new features to be available in Director.

How Do I Articles


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Citrix UPS Printers are not visible via Control Panel, Devices And Printers

This is an known issue with printers provided by Citrix Universal Printer server on windows operating systems Windows Server 2019, Windows Server 2016, Windows 10, Windows Server 2012r2, Windows Server 2012.

Citrix is working with Microsoft to correct this interaction between Microsoft operating systems and Citrix universal print server print provider.

Citrix Documentation:

This issue has been documented in our XenApp/XenDesktop documentation since 7.5

  • Universal Print Server printers selected in the virtual desktop do not appear in the Devices and Printers window in Windows Control Panel. However, when users are working in applications, they can print using those printers. This issue occurs only on Windows Server 2012, Windows 2012 R2 , Windows 10 and Windows 8 platforms. [#335153]

Microsoft Documentation:

The Device Setup Manager service is discussed in the following article from Microsoft it applies to both Windows 8 and Windows 2012.

Device setup user experience in Windows 8

Microsoft released a hotfix for server 2012r2 which partially addressed some issues with 3rd party print provider visibility in newer windows releases.

However this was not a complete solution, and printers provided by Citrix Universal Print Server remained not visible.​



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HDX Flash Redirection Compatibility

HDX Flash Redirection is a technology that allows Flash-based videos to be rendered on the end user device (Windows or Linux) while appearing seamlessly integrated with the server-side web browser. HDX Flash provides a better user experience by offloading Adobe Flash rendering from the Citrix XenApp or XenDesktop server to the user device. The objective is to offload 80% or more of websites that leverage Flash. When Adobe Flash content cannot be redirected to the user device, the technology attempts to gracefully fall back to server-side rendering. Websites that cannot use Flash Redirection are blacklisted, either automatically by the software or manually by a system administrator.

If client-side Flash rendering is not desired, the HDX Flash Redirection technology can be disabled by using policies but the scalability benefits of HDX Flash Redirection are lost.

Compatibility Matrix

HDX Flash Redirection behavior might be affected by the Adobe Flash version, the XenApp or XenDesktop VDA version, as well as the Receiver version used to access applications and desktops. The browser version seems to have the largest impact on the specific Flash Redirection behavior that could be experienced in your environment.

Citrix has tested a variety of Adobe Flash and Internet Explorer versions against different XenApp and XenDesktop versions to determine the stability of Flash Redirection with these different combinations and to ensure that Flash Redirection works as expected. The following matrix comprises the scope of our testing:


  • On July 25, 2017, Adobe announced End of Life (EOL) for Flash. Adobe plans to stop updating and distributing the Flash Player at the end of 2020. Microsoft announced that they are phasing out Flash support in Internet Explorer before the Adobe date. They are removing Flash from Windows by the end of 2020. When that happens, users can no longer enable or run Flash in Internet Explorer. Citrix aligns with Microsoft policy and continues to maintain and support HDX Flash Redirection until the end of 2020. More information available on https://docs.citrix.com/en-us/xenapp-and-xendesktop/7-15-ltsr/multimedia/flash-redirection.html
  • Adobe no longer has Extended Support Release (ESR) versions of Flash. Customers are recommended to use the supported versions of Flash as outlined in the matrix below.
  • Some websites stream content using HTML5 by default, such as Youtube.com and may prompt to install Flash even after adding to Compatibility View. To use Flash Redirection on such websites, Emulation Mode should be used.(for example IE9 mode) The later section of the article outlines steps to enable Emulation Mode.
  • Beginning January 12, 2016, Microsoft supports only the most current version of Internet Explorer available for an operating system. Flash Redirection will be supported on the latest version of Internet Explorer supported on the operating system. For details, refer to Microsoft Lifecycle Support policy for Internet Explorer.
Versions Tested Up To
Adobe Flash 32.0
Internet Explorer
Receiver for Windows 4.9 4.9.6000
Workspace App 1905

Citrix recommends the XenApp or XenDesktop component updates below used in our testing to achieve the best Flash Redirection experience.

These hotfixes contain several Flash Redirection related fixes that provide more stability to environments using Flash Redirection, particularly those which resulted in blacklisting websites and Flash videos not playing.

Website Content: Adobe Flash technology and content is frequently updated on many websites that might impact Flash Redirection particularly with Internet Explorer 11. Some of these website specific issues can be resolved by one of the following workarounds:

  • Enable Internet Explorer Compatibility View and add the website(s) to the list.
  • Enable Emulation Mode on the user device. In Internet Explorer, on the Tools menu, click F12 Developer Tools. In the far left of the DOM Explorer screen, scroll down the list and select the Emulation icon. In Document Mode, select 9 or 10. Microsoft Enterprise Mode Site List Manager can be utilized to automate the Document Mode.







XenApp / XenDesktop

7.6, 7.15, 1903, 1906

The following articles provide a list of fixes included in XenDesktop/XenApp 7.6 version along with related fix information:

CTX138196 (Desktop OS), CTX142117 (Server OS)

List of Flash Related Articles

For more information, see the following articles: List of Flash Related Articles.

Installation and Configuration

CTX126529 – How to Enable Server-Side Content Fetching in HDX MediaStream for Flash

CTX124190 – How to Deploy and Configure HDX MediaStream for Flash

CTX125413 – How to Change the Background Color of Client-Rendered Flash Content for HDX MediaStream Flash Redirection

Known Issues and Limitations

CTX214127 – Citrix Known Issues With Adobe Flash Update

CTX214103 – Citrix Known Issues With Adobe Flash 22

CTX201150 – Adobe Flash 18 – Citrix Known Issues

CTX126702 – HDX MediaStream for Flash – Client-Side Content Fetching Limitations

CTX125324 – HDX MediaStream Flash Redirection – Network Latency Performance Issues

CTX124756 – HDX MediaStream for Flash Creates an Unknown Security Identifier in the ICA-tcp Port Permissions on Windows 2003 Feature Pack 2 Servers

CTX132751 – Windows Volume Control not working in VDA with HDX MediaStream for Flash v2

CTX128586 – HDX Monitor Tool Fails to Launch

CTX130847 – IMA Modules to Select when Recording a CDF Trace for a HDX MediaStream Flash Redirection Issues

CTX137799 – Internet Explorer 10 – Citrix Known Issues

CTX139939 – Microsoft Internet Explorer 11 – Citrix Known Issues


CTX134786 – Troubleshooting Flash V2 on Linux

CTX127188 – Troubleshooting Guide For Citrix HDX Components

CTX126491 – HDX Experience Monitor for XenApp

CTX135817 – HDX Monitor 3.x

CTX141595 – How to Enable HDX Flash Logging for Server-Side Rendering Failure


Supported Databases for XenApp and XenDesktop Components

Citrix is committed to ensuring that our products function with the latest Microsoft SQL databases. Citrix supplies best efforts to ensure compatibility with upcoming database releases. New versions of supported databases released after our products have been released, must work. However, Citrix recommends creating a test environment to ensure there are no unforeseen issues related to changes made to the new version or update of the third-party product. Individuals wishing to use the new release with current Citrix products must perform their own testing before using the platform. Citrix does not support any BETA versions of third-party products.

This document will be updated periodically as new information becomes available.

What has changed from the last release of the matrix

  • Updated support for Virtual Apps and Desktops (XenApp/XenDesktop) 7 1906
Supported Databases Virtual Apps and Desktops (XenApp/XenDesktop) 7.15LTSR / 1811 / 1903 / 1906 XenApp/XenDesktop 7.6 LTSR Provisioning Services 7.15 LTSR / 1811 / 1903 / 1906 Provisioning Services 7.6 LTSR XenApp 6.5 HRP07
SQL 2017
x64 Yes Yes Yes (1) Yes (1) Yes
Express Yes Yes Yes (1) Yes (1) Yes
SQL 2016 SP1, SP2
x64 Yes Yes Yes (1) Yes (1) Yes
Express Yes Yes Yes (1) Yes (1) Yes
SQL 2014 SP1, SP2, SP3
x86 Yes Yes Yes (1) Yes (1) Yes
x64 Yes Yes Yes (1) Yes (1) Yes
Express Yes Yes Yes Yes Yes
SQL 2012 SP1, SP2, SP3, SP4
x86 Yes Yes Yes (1) Yes (1) Yes
x64 Yes Yes Yes (1) Yes (1) Yes
Express Yes Yes Yes Yes Yes
SQL 2012
x86 Yes Yes Yes (1) Yes (1) Yes
x64 Yes Yes Yes (1) Yes (1) Yes
Express Yes (2) Yes (2) Yes Yes Yes
SQL 2008 R2 SP2, SP3
x86 Yes Yes Yes Yes Yes
x64 Yes Yes Yes Yes Yes
Express Yes Yes Yes Yes Yes

  1. PVS 7.7 onwards Always ON is supported. PVS 7.11 introduced Multi-subnet Failover
  2. Known issue using SQL 2012 and above with XenDesktop, Refer to article ‘CTX132438 – Unable to Create New XenDesktop Site Using SQL 2012 Server’


  • The x86 and x64 versions of SQL (version 2012 and later) have been validated with Always On, Clustered, Standalone and Mirrored modes.
  • The Express edition has been validated only as Standalone.


Citrix Webcam not supported in x64 application like Google Chrome or Microsoft Teams

Webcam redirection is not supported in 64-bit applications with XenApp / XenDesktop 7.16 or older. This was fixed on 7.17 and Receiver 4.11 for Windows.

Also, note downloading Google Chrome and installing – you may note that the application appears in the folder:

C:Program Files (x86)GoogleChromeApplication

User-added image
Which would normally indicate that application is 32bit; however, checking Task manager displays as 64bit application:

User-added image
Capturing a CDF trace and observe that similar information is logged on the VDA CDF trace when a 64-bit application attempts to use a webcam (aka Media capture)…

112496 0 2017/04/09 09:44:12:15668 3036 4020 -1 HostMMTransport IcaMMTransport::Connect 9 Error [Id=1] IcaMMTransport::Connect: Media capture is not supported for 64-bit applications.

Install *Google Chrome for business* available now as Chrome MSI 32-bit to resolve the issue.


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Citrix MSI Log Analyzer


The Citrix MSI Log Analyzer is designed to assist with the following scenarios:

  • When failure occurred during install or upgrade or uninstall of XenApp/XenDesktop
  • The Citrix MSI Log Analyzer analyzes the failure and provides helpful info for troubleshooting the issue
  • The Citrix MSI Log Analyzer will also try to point to a knowledge base article helpful to troubleshoot and resolve the issue

What’s New in v1.2.0.9

  • Added support for Storefront logs
  • Added support for uploading experience metrics through TLS 1.2/TLS 1.1.
  • Minor bug fixes and inputs from the feedback


The user needs to be a Local Administrator on the target machine in order to run the tool.

How to use Citrix MSI Log Analyzer

The Citrix MSI Log Analyzer is a standalone executable file and does not require installation. Just download the tool to a local folder and execute the application.

Citrix MSI Log Analyzer offers various command line to deal with different use cases.

  1. To analyze the failure in the msi log file:

    CitrixMSILogAnalyzer.exe -msilogfile <msi log file path>

    Look for MSI log file under %TEMP%CitrixXenDesktop InstallerMSI Log files” folder and specify the absolute path of the failing msi log file in the above command line.

  2. To analyze the failure from the XenApp/XenDesktop Metainstaller log file::

    CitrixMSILogAnalyzer.exe -metainstallerlogfolder <metainstaller log folder path>

    Example: CitrixMSILogAnalyzer.exe -metainstallerlogfolder “C:UsersxxxxAppDataLocalTempCitrixXenDesktop Installer” where xxxx is the admin user name specific to the user environment

  3. To analyze Citrix XenApp/XenDesktop failure log file under temp folder


    This option is useful to run the tool on the target machine where the MSI installation failure happened and one is not sure on where to look for msi failure log file.

  4. To view help:

    CitrixMSILogAnalyzer.exe -help

Note: In order to improve Citrix XenApp/XenDesktop and Citrix MSI Log Analyzer, the troubleshooting data not containing any identifiable information from the tool is uploaded to Citrix. This can be controlled using –upload [Yes | No]

Output from the tool

The output of the tool on the console provides:

1. Troubleshooting info of the actual error

2. CTX article to troubleshoot or resolve the issue

3. Log file saved under %TEMP% with prefix mLog_*.txt. The exact name and path is displayed in the output.

Delete Citrix MSI Log Analyzer

Delete the downloaded executable from the current directory. One may also cleanup mLog_*.txt files under %TEMP% directory

Contact Information:

Questions? Concerns? Send any feedback to:



These software applications are provided to you as is with no representations, warranties or conditions of any kind. You may use and distribute it at your own risk. CITRIX DISCLAIMS ALL WARRANTIES WHATSOEVER, EXPRESS, IMPLIED, WRITTEN, ORAL OR STATUTORY, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NONINFRINGEMENT. Without limiting the generality of the foregoing, you acknowledge and agree that (a) the software application may exhibit errors, design flaws or other problems, possibly resulting in loss of data or damage to property; (b) it may not be possible to make the software application fully functional; and (c) Citrix may, without notice or liability to you, cease to make available the current version and/or any future versions of the software application. In no event should the code be used to support of ultra-hazardous activities, including but not limited to life support or blasting activities. NEITHER CITRIX NOR ITS AFFILIATES OR AGENTS WILL BE LIABLE, UNDER BREACH OF CONTRACT OR ANY OTHER THEORY OF LIABILITY, FOR ANY DAMAGES WHATSOEVER ARISING FROM USE OF THE SOFTWARE APPLICATION, INCLUDING WITHOUT LIMITATION DIRECT, SPECIAL, INCIDENTAL, PUNITIVE, CONSEQUENTIAL OR OTHER DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. You agree to indemnify and defend Citrix against any and all claims arising from your use, modification or distribution of the code.