Microsoft KB Archive/303341

= MSMQ Queues Are Inaccessible After You Add the EnhancedSecurityLevel Registry Key =

Article ID: 303341

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Message Queue Server 1.0

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This article was previously published under Q303341



SYMPTOMS
After you add the EnhancedSecurityLevel registry key, you may not be able to see or access any queues from MQExplorer. Also, you may not be able to send messages to queues on the computer where this registry entry is enabled.



CAUSE
When this registry key is enabled, the caller of the object is verified to be in Kernel mode, or that the access requested for the object matches the access when the object was opened. In this case, the access that was requested was not identical.



RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.

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

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

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.

The English version of this fix should have the following file attributes or later:

  Date          Time             Size        File name     Platform -  Jun 25, 2001  07:39a              19,968   Mq2ndnd.exe   Intel Jun 25, 2001 07:11a              61,552   Mqac.sys      Intel Jun 25, 2001 07:11a              34,064   Mqcertui.dll  Intel Jun 25, 2001 07:11a              34,064   Mqdbmgr.dll   Intel Jun 25, 2001 07:11a              59,152   Mqdscli.dll   Intel Jun 25, 2001 07:11a              56,592   Mqdssrv.dll   Intel Jun 25, 2001 07:11a             227,088   Mqis.dll      Intel Jun 25, 2001 07:11a              16,144   Mqkeyhlp.dll  Intel Jun 25, 2001 07:11a             142,096   Mqoa.dll      Intel Jun 25, 2001 07:11a               8,464   Mqperf.dll    Intel Jun 25, 2001 07:11a             505,616   Mqqm.dll      Intel Jun 25, 2001 07:11a             110,352   Mqrt.dll      Intel Jun 25, 2001 07:34a           1,831,208   Mqsetup.dll   Intel Jun 25, 2001 07:11a              14,096   Mqsvc.exe     Intel Jun 25, 2001 07:11a             106,768   Mqutil.dll    Intel Jun 25, 2001 07:11a              62,224   Msmq.cpl NOTE: Due to file dependencies, this hotfix requires Microsoft Windows NT 4.0 Service Pack 6a.



STATUS
Microsoft has confirmed that this is a problem in Windows NT 4.0.



MORE INFORMATION
The EnhancedSecurityLevel registry key is set in the registry under the following key:

HKEY_LOCAL_MACHINE\SYSTEM Key\CurrentControlSet\Control\Session manager

This key ensures that Object Manager can change the attributes of a kernel object in the Object table for the current process if the previous mode of the caller is Kernel mode.

Keywords: kbhotfixserver kbqfe kbbug kbenv kbfix kbqfe KB303341

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