Article ID: 306197
This article has been archived. It is offered "as is" and will no longer be updated.
When you use Microsoft Message Queuing, your computer may quit (crash) with a blue-screen error in Mqac.sys.
When the Microsoft Message Queuing queue manager receives a packet and calls the driver to perform putpacket processing, an error in the putpacket processing operation causes the queue manager to free the packet, and then the driver attempts (unsuccessfully) to free the packet.
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. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows NT 4.0 service pack that contains this fix.
To resolve this problem immediately, 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;CNTACTMSNOTE: 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 typical 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 has the file attributes (or later) 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.
The hotfix package for this article will actually contain the fix for the following article in the Microsoft Knowledge Base:
Date Time Version Size File name ----------------------------------------------------- 23-Sep-2002 08:51 11,163 Crdbsp7.sql 23-Sep-2002 08:50 19,968 Mq2ndnd.exe 02-Jul-2003 08:02 184.108.40.2067 61,584 Mqac.sys 23-Sep-2002 08:27 220.127.116.116 34,064 Mqcertui.dll 02-Jul-2003 08:02 18.104.22.1687 34,064 Mqdbmgr.dll 02-Jul-2003 08:02 22.214.171.1247 59,152 Mqdscli.dll 02-Jul-2003 08:02 126.96.36.1997 56,592 Mqdssrv.dll 02-Jul-2003 08:02 188.8.131.527 227,088 Mqis.dll 02-Jul-2003 08:02 184.108.40.2067 16,144 Mqkeyhlp.dll 02-Jul-2003 08:02 220.127.116.117 142,096 Mqoa.dll 02-Jul-2003 08:02 18.104.22.1687 8,464 Mqperf.dll 02-Jul-2003 08:02 22.214.171.1247 509,200 Mqqm.dll 02-Jul-2003 08:02 126.96.36.1997 110,352 Mqrt.dll 23-Sep-2002 08:45 188.8.131.526 1,831,320 Mqsetup.dll 02-Jul-2003 08:02 184.108.40.2067 14,096 Mqsvc.exe 02-Jul-2003 08:02 220.127.116.117 106,768 Mqutil.dll 23-Sep-2002 08:27 18.104.22.1686 62,224 Msmq.cpl
(https://support.microsoft.com/kb/822835/ )MSMQ: Event ID 2085 "Unable to create message file ..."
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.