Product Documentation

Known and fixed issues

Mar 13, 2017

Installation issues

  • If Citrix Licensing is installed in a clustered environment and Windows Firewall is enabled (the default configuration for Windows 2008), connections can fail. Connecting remotely to the console or checking out licenses works until failover occurs in the cluster. Exception rules for CITRIX.exe and lmadmin.exe are created during installation of Licensing and Simple License Service, but do not work after a cluster failover. To work around this issue, create exceptions for Licensing components on the Exceptions tab of the Windows Firewall panel. Create an exception for each of the following ports: Console Web Server port (default port is 8082); License Server Manager port (default port is 27000); Simple License Service port (default port is 8083); and Vendor Daemon port (default port is 7279). This issue occurs with Windows Server 2008 (32-bit and 64-bit), Windows Server 2008 R2, and Windows Server 2012. For more information, see [#232365]
  • During the installation, the Configuration page is presented. If you choose not to configure the License Server, you can configure it at a later time. You must restart the License Server installer or use the configuration tool. You can open the tool from: C:\Program Files\Citrix\Licensing\LS\resource\Licensing.Configuration.Tool.exe. If the License Server Configuration tool fails for any reason, uninstall and reinstall the License Server.
  • During installation, localized characters in the installation path can cause the installation to fail. Accept the default installation path or enter only ASCII alphabetic letter characters for the installation directory. [#229456] 
  • When configuring the product-side setting for the License Server name, do not use localhost. Though you can use the host name, IP address, or FQDN instead, Citrix recommends you use the FQDN. [#165986]
  • When you have the Citrix License Server 11.11.1 and greater installed and then install XenDesktop 5.6, the 30-day free trial license is the only license available to you. Workaround: Accept the trial license and complete the installation. Use Desktop Studio to change the product edition and license model settings after the installation. [#0388512]
  • The installation might fail if the User Account Control (UAC) is enabled when installing on a cluster. [#0484356, #0486196]

Other known issues

  • When using Internet Explorer 9 or 10, the Citrix Licensing Manager page might be blank or  icons might not display. One of these might be the reason:
    • Compatibility view mode is Off - Turn on Compatibility View mode.
    • Browser scripts are disabled - Enable browser scripts.
    • Caching of active documents is enabled - Navigate to Internet options -> Advanced -> Security and deselect Do not save encrypted pages to disk.
  • Assigning a busy port to the vendor daemon or License Administration Console might result in the vendor daemon going down or the Licensing Administration Console becoming inaccessible.
    • Windows - The vendor daemon goes down if you update the vendor daemon port with a port that is already busy followed by a service restart. Access the License Administration Console and update the vendor daemon port with a valid free port followed by a restart to restore License Server.
    • VPX - This situation requires a support call.
  • Because Citrix License Server 11.13.1 turns on HTTPS by default, you cannot collect license consumption information with Citrix Usage Collector on new installations of 11.13.1. 

Workaround: Install Citrix Usage Collector on a License Server and open HTTP and block in the firewall or enable HTTP and leave the firewall open for remote Citrix Usage Collector.

  • The username is case sensitive in some localized languages. To log on to Citrix Licensing Manager, set thedomain-name\username in UPPER CASE if it contains non-ASCII characters. [#595621]
  • If you upgrade an older, existing cluster to 11.12.1, the message, "The installation drive is not part of the selected cluster group. Select the correct cluster group or add the drive to the selected group." displays. To successfully use the new 11.12.1 clustering features, you must uninstall any License Server older than 11.12.1. The older License Servers do not conform to current Microsoft cluster guidelines.
  • When you try to start the License Administration Console or the Citrix Licensing Manager, a blank page might display if the Internet Explorer Enhanced Security Configuration is enabled and the License Administration Console or the Citrix Licensing Manager is not in the Trusted Sites. Workaround: Disable Internet Explorer Enhanced Security Configuration. [#382429]
  • Older Desktop Studio releases (prior to XenDesktop 7 Studio) using this version of the License Server do not display license usage information or manage the License Server using the Licensing Node. This version of the License Server is fully compatible with XenDesktop and can serve licenses for any Citrix product deployment. If you continue to use an older Desktop Studio, use the License Administration Console that ships with the License Server to display license usage, manage License Server users, and upload licenses. If you are using a version of XenDesktop prior to the XenDesktop 7 and you upgrade from earlier versions of Citrix License Server for Windows to version 11.11.1 and 11.12.1, you might see the following warning:

    Warning: Installing this update removes the Licensing Configuration Service. As a result, all versions prior to this release of Studio provide only limited licensing information.

  • On non-English platforms, when starting a License Service installation on a cluster node, the Cluster Group list on the Configure screen might contain the system default Cluster Group. Select one of the non-default Cluster Groups and the installation continues normally. [#0497524]
  • lmhostid returns blank when it is queried to return an IPv6 type of address. 

Other known issues and considerations - License Server VPX Only

  • Studio does not display license usage information or manage the License Server. Use the License Administration Console that ships with the License Server to display license usage, manage License Server users, and upload licenses.
  • When configuring XenDesktop 7.0 - 7.13 or XenApp 7.5 - 7.13, use the PowerShell Set-Configsite cmdlet to point to License Server VPX. If doing a fresh install, install and configure XenDesktop and XenApp using its installer, and then use PowerShell to reconfigure and point to License Server VPX.

    Set-ConfigSite -LicenseServerName <DNS_name/IP_of_licence_server> -LicenseServerPort <port>

  • Clustered License Servers are not supported for VPX. You can use the High Availability (HA) feature on XenServer 5.6 and later.
  • Ports 1-1024 are reserved by the operating system. When configuring the VPX ports, use ports above 1024. By default, VPX uses port 8082 for SSL, which is open in the firewall. If you choose a different port for SSL, reconfigure the firewall in the iptables.
  • Upgrades are not supported for License Server VPX.
  • The License Server VPX does not support Active Directory.

License file issues

  • Certain license types are not covered by Subscription Advantage and therefore appear in alerts in the Dashboard of the License Administration Console indicating that the Subscription Advantage date is expired. You can ignore such alerts for any license not covered by Subscription Advantage. This includes Evaluation licenses, Not for Resale licenses, Early Release licenses and Technology Preview licenses. These types of licenses do not need Subscription Advantage and your Citrix products do not stop working when the Subscription Advantage date is expired. You can verify the status of any license for which you receive an alert by clicking the license on the Dashboard. The license information expands to show the license type (such as Technology Preview), the license expiration date, and the Subscription Advantage date. [#231847]
  • License Files with multiple lines referencing HOSTNAME= are ignored by the License Server. Licenses in these files cannot be checked out. This issue is caused when you download licenses associated to different License Server hostnames into the same license file. The License Administration Console displays the following error message: "...Error List Returned...Unknown Host."

    To resolve this issue, download again separate license files for each Citrix product tied to different License Server names.

  • After you replace evaluation license files on the License Server with new license files, the Citrix product might continue to display the following license expiration message when users log on: "Warning: The following Citrix Product is using an Evaluation license. This license will expire in..."

    To resolve this issue:

    1. Remove the old evaluation license files from the License Server. (See Delete license files in Citrix documentation.)
    2. At the License Server, restart the Citrix Licensing service.
    3. At the Citrix product server that needs license validation, point to a fictional License Server and then point the product back to the actual License Server. (See your product's documentation for information about changing these settings.)
    4. If the problem persists, restart the product server (for example, XenDesktop Controller).

Product-specific issues

Citrix XenApp Management Pack

  • Details about the Citrix License Server are always blank on the Monitoring tab of the System Center Operations Manager for Citrix Managed Servers. There is no workaround for this issue. [#192159]

Fixed issues

  • To install License Server using PowerShell Remoting or deploy with Group Policy Objects, set the environment variable FORCE_NO_SERVICE=1 on the target system. [#507466]
  • If you enable https port redirection in the License Administration Console, udadmin might not connect to the License Server. [#543418]


  1. Disable Redirect non-secure web access to secure web access.
  2. Restart Citrix Licensing service, creating a firewall rule to block incoming access to the HTTP Port the License Administration Console uses.
  3. Inform users to access the License Administration Console using the HTTPS port.
  • For Windows only - Citrix Licensing 11.12.1 for Windows might be vulnerable to the Padding Oracle On Downgraded Legacy Encryption (POODLE) vulnerability. POODLE affects older standards of encryption - Secure Socket Layer (SSL) version 3 but not the newer encryption method Transport Layer Security (TLS). The workaround to mitigate a security issue is documented at [#0512929]
  • For VPX only - When the vendor daemon CITRIX is down or stopped, a Critical Alert does not appear in the notification panel. [#450894]