Filename: DesktopVDACoreWX64_7_6_305.msp
For: XenApp 7.6 Feature Pack 3; XenDesktop 7.6 Feature Pack 3 VDA Core Services for Windows Desktop OS (64-bit), XenApp 7.7; XenDesktop 7.7 VDA Core Services for Windows Desktop OS (64-bit). System Requirements
Replaces: DesktopVDACoreWX64_7_6_304
Date: January, 2016
Languages supported: English (US), German (DE), Spanish (ES), French (FR), Japanese (JA), Simplified Chinese (SC)
Readme version: 1.07

Readme Revision History

Important Note(s)

• This software update was originally released before March 18, 2016. Effective January 1, 2016, Microsoft deprecated the SHA-1 certificate Citrix used to code sign this update. This rerelease of the update uses the requisite replacement certificate. No other changes were made to the update. If you installed this update before the March 18, 2016 rerelease, there is no need for you to reinstall it.
• This update replaces DesktopVDACoreWX64_7_6_304, which was causing issues when installed on Windows 10 Version 1511 (Build 10586.36).
• This update is based on Version 7.6.300 of the VDA Core Services for Windows Desktop (64-bit).
• This update can be applied to both Version 7.6.300 and Version 7.7 systems.
• On machines running the Version 7.7 VDA, in Programs and Features > Installed Updates, this update appears as DesktopVDACoreWX64_7_6_305.
• You can upgrade the VDA from a console session or from an RDP session. Upgrading from within an ICA session is not supported.
• 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 XenApp and XenDesktop 7.6 or XenApp and XenDesktop 7.7 on the Citrix Product Documentation site.

New Fixes in This Release

1. After installing one or more of the following Microsoft Security Updates, attempts to log on to a XenDesktop VDA 7.6.300 or 7.7 running either version of Windows 10 fail. For more information, see Knowledge Center article CTX205398.

   Windows 10 RTM (LTSB)	Security Updates	Release Date
   	KB3124266	January- 2016
   	KB3135174	February- 2016
   	KB3140745	March- 2016
   	KB3147461	April- 2016
   	KB3156387	May- 2016
   Windows 10 Version 1511 (Current Business Branch)	KB3124263	January- 2016
   	KB3124262	January- 2016
   	KB3135173	February- 2016
   	KB3140768	March- 2016
   	KB3147458	April- 2016
   	KB3156421	May- 2016
   Windows 10 Version 1511 (Updated Feb 2016)	Cumulative image inclusive of all updates up to February 2016	March- 2016

   Note: If you have installed any of the Microsoft Security Updates above:

   If you have installed any of the Microsoft Security Updates above on a Windows 10 RTM (Build 10240) VDA or on a Windows 10 Version 1511 (Build 10586.36) VDA and want to apply this update, do the following:

   1. Reboot and log in to the Windows 10 VDA using Safe Mode.
   2. Uninstall the Microsoft Security Updates above and reboot.
   3. Install this update and reboot.
   4. Install any applicable Microsoft Security Updates.

   For new deployments of the 7.6.300 VDA on Windows 10 (RTM / Version 1511 / Version 1511 (Updated Feb 2016)), do the following:

   1. Prepare a Windows 10 (RTM / Version 1511 / Version 1511 (Updated Feb 2016)) image.
      Caution: Installing the VDA and rebooting in the next step can place the machine into an unrecoverable state. It is essential not to reboot after installing the VDA.
   2. Install the 7.6.300 VDA and choose NOT to reboot.
   3. Install this update and reboot.

   [From DesktopVDACoreWX64_7_6_305][#LC4604]

Fixes from Replaced Hotfixes

This hotfix replaces Hotfix DesktopVDACoreWX64_7_6_304 (Fix #LC4540), which was not compatible with Windows 10 Version 1511.

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)