Citrix MetaFrame XP or Citrix MetaFrame Presentation Server 3.0 do not work as expected after you install Update Rollup 1 on a Windows 2000 SP4-based server (904711)

Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry

SYMPTOMS

Consider the following scenario. You have either of the following products installed on a Microsoft Windows 2000 Service Pack 4 (SP4)-based server:

Citrix MetaFrame XP Server for Windows with Feature Release 3 (FR3)
Citrix MetaFrame Presentation Server 3.0

You install Update Rollup 1 for Windows 2000 SP4 on this Windows 2000 SP4-based server. After you install the update rollup, you use the Citrix Independent Computing Architecture (ICA) Client program on a client computer to establish a connection with the Windows 2000-based server. You then try to run a published program on this server.

In this scenario, when you establish the connection with the Windows 2000-based server, you notice that you cannot run the published program. Additionally, you are not prompted to enter the user logon credentials. Subsequently, the client computer becomes unresponsive and you have to end the ICA Client session.

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows 2000 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

To apply this hotfix, you must have Windows 2000 Service Pack 4 (SP4) installed on the computer.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

   Date         Time   Version           Size  File name
   --------------------------------------------------------
   01-Aug-2005  02:54  5.0.2195.7061  184,592  Winlogon.exe
   12-Jul-2005  04:15  5.0.2195.7059  100,112  Scardsvr.exe

WORKAROUND

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

To work around this problem, follow these steps:

Click Start, click Run, type regedit, and then click OK.
In Registry Editor, locate and click the following registry subkey:
HKEY_LOCAL_MACHINE\Software\Citrix\Ctxhook\AppInit_Dlls\Smart Card Hook
In the right-pane, locate and double-click the FilePathName registry entry.
In the Value data box, locate and rename scardhook.dll to scardhook.dll.old.
Quit Registry Editor.
Restart the computer.

MORE INFORMATION

For more information about other Citrix MetaFrame related issues, click the following article number to view the article in the Microsoft Knowledge Base:

824309 Very long logon and logoff times when you try to connect to Citrix MetaFrame or Citrix 1.8

For more information about the standard terminology that is used to describe Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.