You Receive a "Stop 0x00000050" Error When You Restart Microsoft Message Queuing

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Article ID: 816957 - View products that this article applies to.
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You may receive the following error when you restart Microsoft Message Queuing, also known as MSMQ:
Stop 0x00000050


To resolve this problem, make the MQAC driver track how many Queue Manager handles are opened. ACConnect fails if the count is not 0. The Queue Manager tries to call ACConnect three times, and it waits 20 seconds between each call. Queue Manager exits if it cannot connect to ACConnect.

Service Pack Information

To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack

Hotfix Information

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 2000 service pack that contains this hotfix.

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:
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 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.
   Date         Time   Version      Size    File name
   26-Mar-2003  16:30         281,360  Mq1repl.dll
   04-Feb-2003  15:51          14,096  Mq1sync.exe
   26-Mar-2003  16:27          75,536  Mqac.sys
   26-Mar-2003  16:30         217,360  Mqads.dll
   30-Oct-2002  16:43          25,360  Mqbkup.exe
   26-Mar-2003  16:30          76,560  Mqdscli.dll
   26-Mar-2003  16:30          42,256  Mqdssrv.dll
   21-Oct-2002  20:31          98,064  Mqmig.exe
   26-Mar-2003  16:30         265,488  Mqmigrat.dll
   26-Mar-2003  16:30         222,480  Mqoa.dll
   26-Mar-2003  16:30           8,464  Mqperf.dll       
   26-Mar-2003  16:30         428,304  Mqqm.dll         
   26-Mar-2003  16:30         102,672  Mqrt.dll
   26-Mar-2003  16:30          70,928  Mqsec.dll
   26-Mar-2003  16:30         400,656  Mqsnap.dll
   26-Mar-2003  16:30          23,824  Mqupgrd.dll
   26-Mar-2003  16:30         110,352  Mqutil.dll
   26-Mar-2003  16:30          64,784  Msmq.cpl



Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.


For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:
265173 The Datacenter Program and Windows 2000 Datacenter Server Product


Article ID: 816957 - Last Review: February 27, 2014 - Revision: 2.4
  • Microsoft Message Queuing 2.0
kbnosurvey kbarchive kbhotfixserver kbqfe kbwin2ksp4fix kbbug kbfix kbwin2000presp4fix KB816957

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