Microsoft KB Archive/891308

= Certificates and their associated private keys are not available when a user who has a roaming user profile uses a Windows 2000-based computer to log on to the network =

Article ID: 891308

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Advanced Server

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SYMPTOMS
Consider the following network environment:
 * The network contains client computers that are running Microsoft Windows 2000 and client computers that are running Microsoft Windows XP Professional.
 * The users on the network have roaming user profiles.

In this environment, when a user uses a Windows 2000-based computer to log on to the network, certificates and their associated private keys are not available. When the same user uses a Windows XP-based computer to log on to the network, certificates and their associated private keys are available.

Note This problem may affect any program or feature that uses the CryptoAPI system to manage certificates and keys. For example, this problem may affect Microsoft Office, Microsoft Internet Explorer, or the Encrypting File System (EFS).



CAUSE
This problem occurs because Microsoft Windows XP and later versions of Windows use an iterative encryption scheme to encrypt master keys. Windows 2000 uses a non-iterative encryption scheme. Therefore, a Windows 2000-based computer cannot recognize keys that are encrypted on a Windows XP-based computer.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, 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 3 installed on your computer.

Restart requirement
You must restart your 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 ---  24-Mar-2004  02:17  5.0.2195.6876     388,368  Advapi32.dll 17-Jun-2004 23:05  5.0.2195.6951      46,352  Basesrv.dll 24-Mar-2004 02:17  5.0.2195.6866      69,904  Browser.dll 21-Sep-2003 00:45  5.0.2195.6824     236,304  Cmd.exe 24-Mar-2004 02:17  5.131.2195.6824   543,504  Crypt32.dll 24-Mar-2004 02:17  5.131.2195.6824    61,200  Cryptnet.dll 24-Mar-2004 02:17  5.0.2195.6868      76,048  Cryptsvc.dll 24-Mar-2004 02:17  5.0.2195.6824     134,928  Dnsapi.dll 24-Mar-2004 02:17  5.0.2195.6876      92,432  Dnsrslvr.dll 24-Mar-2004 02:17  5.0.2195.6883      47,888  Eventlog.dll 17-Jun-2004 23:05  5.0.2195.6945     231,184  Gdi32.dll 24-Mar-2004 02:17  5.0.2195.6890     143,632  Kdcsvc.dll 11-Mar-2004 02:37  5.0.2195.6903     210,192  Kerberos.dll 17-Jun-2004 23:05  5.0.2195.6946     712,464  Kernel32.dll 21-Sep-2003 00:32  5.0.2195.6824      71,888  Ksecdd.sys 15-Oct-2004 15:16  5.0.2195.6987     513,296  Lsasrv.dll 25-Feb-2004 23:59  5.0.2195.6902      33,552  Lsass.exe 24-Mar-2004 02:17  5.0.2195.6898      37,136  Mf3216.dll 24-Mar-2004 02:17  5.0.2195.6824      54,544  Mpr.dll 17-Jun-2004 23:05  5.0.2195.6928     335,120  Msgina.dll 11-Mar-2004 02:37  5.0.2195.6897     123,152  Msv1_0.dll 10-Jun-2004 16:58  5.0.2195.6949     309,008  Netapi32.dll 24-Mar-2004 02:17  5.0.2195.6891     371,472  Netlogon.dll 24-Mar-2004 02:17  5.0.2195.6896   1,028,880  Ntdsa.dll 14-Feb-2005 07:46  5.0.2195.7026     121,104  Psbase.dll 24-Mar-2004 02:14  5.0.2195.6892      90,264  Rdpwd.sys 24-Mar-2004 02:17  5.0.2195.6897     388,368  Samsrv.dll 24-Mar-2004 02:17  5.0.2195.6893     111,376  Scecli.dll 24-Mar-2004 02:17  5.0.2195.6903     253,200  Scesrv.dll 07-Feb-2005 05:35  5.0.2195.7026   6,301,696  Sp3res.dll 29-Dec-2004 09:14  5.0.2195.7017     380,688  User32.dll 14-Feb-2005 07:46  5.0.2195.7029     396,048  Userenv.dll 24-Mar-2004 02:17  5.0.2195.6824      50,960  W32time.dll 21-Sep-2003 00:32  5.0.2195.6824      57,104  W32tm.exe 24-Dec-2004 17:23  5.0.2195.7013   1,633,616  Win32k.sys 11-Oct-2004 07:04  5.1.2600.1557     331,776  Winhttp.dll 24-Aug-2004 22:59  5.0.2195.6970     182,544  Winlogon.exe 17-Jun-2004 23:05  5.0.2195.6946     244,496  Winsrv.dll 24-Mar-2004 02:17  5.131.2195.6824   167,184  Wintrust.dll 17-Jun-2004 23:05  5.0.2195.6946     712,464  Kernel32.dll 24-Dec-2004 17:23  5.0.2195.7013   1,633,616  Win32k.sys 17-Jun-2004 23:05  5.0.2195.6946     244,496  Winsrv.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
The encryption scheme was changed in Windows XP to help defend against dictionary-based password attacks.

For additional information about the new file naming schema for Microsoft Windows software update packages, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

For additional information about the terminology that is used in this article, 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

Keywords: kbbug kbfix kbwin2000presp5fix kbhotfixserver kbqfe KB891308

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