Hotfix package name: UpsClient100WX64100.zip
For: Computers running Windows Server 2008 R2 (64-bit), Windows 7 (64-bit), Windows XP (64-bit), or Windows Vista (64-bit) with one of the following installed:

• XenApp 6.5
• XenApp 6.5 Feature Pack 1
• XenDesktop 5.5 (Virtual Desktop Agent)
• XenDesktop 5.6 (Virtual Desktop Agent)
• XenDesktop 5.6 Feature Pack 1 (Virtual Desktop Agent)

Readme Revision History

Important Notes about This Release

• This is the client component of the Citrix Universal Print feature. Install this component on each XenApp and XenDesktop hosts that provisions session network printers and that uses the Universal Printer Driver.
• Check to ensure .NET 3.0 Service Pack 1 Framework (minimum) is installed before installing the client component. This software is required by XenApp and XenDesktop installations that might be installed already.
• The client component installer enables or installs the following items if they do not exist already:
• Visual C++ 2005 Service Pack 1 and 2008 Service Pack 1 runtime libraries.
• Citrix Client-Side Extension. This software is required to retrieve and configure Universal Print Server policy settings.

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. The print spooler service might exit unexpectedly. The issue occurs when UpProv.dll dereferences a null pointer.

   [From UpsClient100WX64100][#LA2652]

2. When using UPClient with the Universal Print Driver or native printer drivers, users cannot modify printing preferences. Instead, when you close the dialog box, all preferences revert to the previous state.

   [From UpsClient100WX64100][#LA2976]

3. Users experience significant delays when opening the Devices and Printers window, opening the Printer Properties dialog, and navigating to the Ports tab in the Printer Properties dialog. The issue occurs because the print spooler on the Universal Print Client makes excessive RPC connections to the Universal Print Server. To enable this fix in its entirety, you must install both a Print Server hotfix (UpsServer100WX86100; UpsServer100WX64100 or their replacements) and a Universal Print Client hotfix (UpsClient100WX86100; UpsClient100WX64100 or their replacements) that contains Fix #LA3177.

   [From UpsClient100WX64100][#LA3177]

4. On XenApp servers with Fix #LA3177 installed that act as clients to the Universal Print Server, the Windows print spooler can exit unexpectedly. The issue results from a third-party printer driver incompatibility.

   [From UpsClient100WX64100][#LA3672]

5. This fix provides speed improvements when using the Universal Print Server.

   To enable this fix, you must install both Universal Print Server (UpsServer100WX86100; UpsServer100WX64100) and Universal Print Client (UpsClient100WX86100; UpsClient100WX64100) hotfixes or their respective replacements that contain Fix #LA3708.

   [From UpsClient100WX64100][#LA3708]

Fixes from Replaced Hotfixes

No hotfixes were replaced by this release.

Installing and Uninstalling this Release

Notes:

• This release is packaged as a .zip file containing the UpsClient64.msi file. For more information about deploying msi files, see Microsoft article 884016 or visit the Microsoft Web site and search on keyword msiexec.
• Caution: Downgrades, also known as rollbacks, from this upgrade are not supported and might leave your systems in an unstable state. This upgrade does not patch the existing installation - it fully replaces it with a new installation. As a result, uninstalling this package removes the entire component from the computer. If the need arises to revert to an earlier version of the product, you must uninstall this package and then reinstall the earlier version of the product. Reverting to an earlier version of the product might result in the loss of settings you configure while this upgrade is installed.
• To install this package 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. You must restart the server for the installation to complete.
• 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 file to a shared folder on the network.
2. Extract the compressed file and save the UpsClient64.msi file on the computer you want to update.
3. Run the .msi file.
4. Restart the computer.

To uninstall this hotfix:

1. From the Start menu, select Settings > Control Panel.
2. In Control Panel, double-click Programs and Features.
3. Highlight the hotfix you want to remove and click Uninstall.
4. Follow the directions on-screen.