Hotfix package name: XA600R01W2K8R2X64066.MSP
For: Computers running Windows Server 2008 R2 with Citrix XenApp 6, Hotfix Rollup Pack XA600W2K8R2X64R01 installed
Replaces: XA600R01W2K8R2X64007, XA600R01W2K8R2X64012, XA600R01W2K8R2X64049, XA600R01W2K8R2X64052
Date: January, 2013
Language supported: English (US), German (DE), Spanish (ES), French (FR), Japanese (JA), Simplified Chinese (SC)
Readme version: 1.00

Readme Revision History

Important Notes about This Release

• Note: As a best practice, Citrix recommends that you install this and other hotfixes only if you are affected by the specific issues they resolve. Otherwise, Citrix recommends that you wait for the next hotfix rollup pack for your product release. Hotfix rollup packs consolidate most previously released hotfixes and allow you to update systems in a convenient, single installation.
• Important: Installing this hotfix over an ICA session is not supported but you can install it through a remote desktop session using an administrator account.
• 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, see Citrix eDocs, the Citrix Product Documentation Library.

New Fixes in This Release

1. When updating a file located on a drive mapped outside of the session, the modified size of the file is not updated while using the GetFileSize () function in the session.

   [From XA600R01W2K8R2X64066][#LA2067]

2. Servers can experience a fatal exception on picadm.sys with bugcheck code 0x20.

   [From XA600R01W2K8R2X64066][#LA2118]

3. Servers might experience a fatal exception, displaying a blue screen, on picadm.sys with stop code 0x7E.

   [From XA600R01W2K8R2X64066][#LA2172]

4. When updating a file located on a drive mapped outside of the session, the modified size of the file is not updated when opening the file through Windows Explorer in the session.

   [From XA600R01W2K8R2X64066][#LA2645]

Fixes from Replaced Hotfixes

1. An internal race condition within picadm.sys can slow down servers and prevent them from accepting new connections.

   [From XA600R01W2K8R2X64007][#LA0391]

2. Servers might experience a fatal exception, displaying a blue screen, on picadm.sys with bugcheck code 0x34.

   [From XA600R01W2K8R2X64012][#LA0795]

3. Servers might experience a fatal exception, displaying a blue screen, on picadm.sys with bugcheck code 0x34.

   [From XA600R01W2K8R2X64049][#LA1194]

4. Servers might experience a fatal exception, displaying a blue screen, on picadm.sys with stop code 0xDE.

   [From XA600R01W2K8R2X64049][#LA1249]

5. Servers might experience a fatal exception, displaying a blue screen, on picadm.sys.

   [From XA600R01W2K8R2X64049][#LA1251]

6. A deadlock in picadm.sys can prevent XenApp 6 servers from accepting new client connections. The deadlock occurs within the directory caching area of picadm.

   [From XA600R01W2K8R2X64049][#LA1261]

7. While writing a file to the client drive if the total size exceeds the maximum quota value set for the client drive, an error message or a warning message is not displayed.

   Note: To address this issue in its entirety, you must install both a server and a client hotfix that contains Fix #LA1620.

   [From XA600R01W2K8R2X64049][#LA1620]

8. A deadlock in picadm.sys can cause servers to become unresponsive. Sessions already connected might disconnect and prevent servers from accepting new connections.

   [From XA600R01W2K8R2X64052][#LA1260]

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.
• 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 hotfix successfully, servers must not have registry modification restrictions in place.
• Slipstreaming - installations of the XenApp Server 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 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 Control Panel > Programs and Features.
2. Highlight the hotfix you want to uninstall and click Uninstall.
3. Follow the directions on-screen.
4. If you are using the Delivery Services Console, restart the server to ensure the hotfix is removed from the console's hotfix inventory list.

Files Updated (All Dates/Times UTC)