Hotfix package name: PSE450R05W2K3X64020.MSP
For: Computers running Windows Server 2003 (64-bit) with one of the following installed:

• XenApp 5.0 with Hotfix Rollup Pack PSE450W2K3X64R05
• Presentation Server 4.5 with Hotfix Rollup Pack PSE450W2K3X64R05

Replaces: None
Date: April, 2010
Language supported: English (US)
Readme version: 1.00

Readme Revision History

Version	Date	Change Description
1.00	April, 2010	Initial release

Important Note(s) about This Release

Caution! This hotfix 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, see Citrix eDocs, the Citrix Product Documentation Library.

New Fixes in This Release

1. Kerberos pass-through authentication can fail in multiple domain environments.

   [From PSE450R05W2K3X64020][#225531]

Fixes from Replaced Hotfixes

No hotfixes were replaced by this release.

Installing and Uninstalling This Release

Notes:

• This hotfix 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.
• To install this hotfix successfully, servers must not have registry modification restrictions in place.
• This hotfix might or might not prompt you to restart the server when the installation or uninstallation is complete. If you are using the Delivery Services Console, you must restart the server after installing or uninstalling this hotfix to ensure that the hotfix is added to or removed from the console’s hotfix inventory list.
• If the need arises to restore the original settings and functionality provided by this hotfix, you must uninstall the hotfix before reinstalling it according to the installation instructions below.

To install this hotfix:

1. Copy the hotfix package to an empty folder on the hard drive of the server you want to update.
2. Close all applications.
3. Run the executable.
4. Restart the server.
5. If you are using the Delivery Services Console, restart the server to ensure the hotfix is added to the console’s hotfix inventory list.

To uninstall this hotfix:

1. From the Start menu, select Settings > Control Panel.
2. In Control Panel, double-click Add/Remove Programs.
3. Highlight the hotfix you want to uninstall and click Remove.
4. Follow the directions on-screen.
5. If you are using the Delivery Services Console, restart the server to ensure the hotfix is removed from the console’s hotfix inventory list.

To read more and download http://support.citrix.com/article/CTX124061