Filename: BrokerAgent750WX64003.msp
For: XenApp 7.5; XenDesktop 7.1 and 7.5 Broker Agent for Windows (Server or Desktop) OS VDA (64-bit). For operating system requirements, see Citrix eDocs, the Citrix Product Documentation Library.
Replaces: All previous versions
Date: December, 2014
Language supported: English (US), Japanese (JA), Simplified Chinese (SC)
Readme version: 1.00

Readme Revision History

Important Note(s)

• Caution! This release may require you to edit the registry. Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Citrix cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

Where to Find Documentation

This document describes the issue(s) resolved by this release and includes installation instructions. For additional product information, including supported operating systems and system requirements, see Citrix eDocs, the Citrix Product Documentation Library.

New Fixes in This Release

1. VDAs can becomes stuck in the "initializing" state of registration process. The issue occurs after the Citrix Desktop Service is running for several days without being restarted.

   [From BrokerAgent750WX64003][#LC0570]

2. When the function "CName" is enabled, VDA registration can take excessively long. With this fix, turning on the "CNameSuppressOrgFqdnLookup" value speeds up the registration process.
   Important: You must enable "CName" if you enable "CNameSuppressOrgFqdnLookup."

   To enable the fix, you must create the following registry key:

   • HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\VirtualDesktopAgent
     Name: UseCnameLookup
     Type: REG_DWORD
     Value: Enabled = 1 (Disabled=0)
   • HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\VirtualDesktopAgent
     Name: CNameSuppressOrgFqdnLookup
     Type: REG_DWORD
     Value: Enabled = 1 (Disabled=0)

   [From BrokerAgent750WX64003][#LC0791]

Fixes from Replaced Hotfixes

1. This fix addresses a security vulnerability. For more information, see Knowledge Center article CTX139591.

   [From BrokerAgent750WX64001][#LA4447]

2. Attempts to launch a VDA from StoreFront can fail with the following error message even when a redundant controller is available:

   "You cannot access this session because no licenses are available."

   [From BrokerAgent750WX64002][#LC0255]

Installing and Uninstalling this Release

Notes:

• This release is packaged with Microsoft Windows Installer 3.0 as a .msp file. For more information about deploying .msp files, see Microsoft article 884016 or visit the Microsoft Web site and search on keyword msiexec.
• This installer program complies with Microsoft User Account Control (UAC). If UAC is enabled, you must run the installer program in elevated mode; that is, with administrative privileges enabled. For more information about UAC, see Microsoft TechNet or visit the Microsoft Web site and search on keyword UAC.
• To install this release successfully, computers must not have registry modification restrictions in place.
• Slipstreaming - installations of the VDA for Windows Desktop OS base product packaged with one or more individual hotfixes - is not supported and might leave servers in an unstable state.
• You must restart the server after the installation of this hotfix completes. However, if you are installing multiple hotfixes at the same time, there is no need to restart the server after the installation of each hotfix. It is sufficient to restart the server after the installation of the final hotfix completes.
• If the need arises to restore the original settings and functionality provided by this release, you must uninstall the release before reinstalling it according to the installation instructions below.

To install this release:

1. Copy the release package to an empty folder on the hard drive of the computer you want to update.
2. Close all applications.
3. Run the executable.
4. Restart the computer.

To uninstall this release:

1. From the Start menu, select Control Panel > Programs and Features.
2. Highlight the release you want to uninstall and click Uninstall.
3. Follow the directions on-screen.

Files Updated (All Dates/Times UTC)