Article ID: 922643 - View products that this article applies to.
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A computer that is running Windows NT Server 4.0 Terminal Server Edition Service Pack 6 may unexpectedly stop several times a day when the load is high. When this issue occurs, one of the following error messages appears on a blue screen:
Invalid system memory was referenced. This cannot be protected by try-except, it must be protected by a Probe. Typically the address is just plain bad or it is pointing at freed memory.
Arg1: a9f92000, memory referenced.
Arg2: 00000000, value 0 = read operation, 1 = write operation.
Arg3: 00000000, If non-zero, the instruction address which referenced the bad memory address.
Arg4: 00000001, (reserved)
This is a very common bugcheck. Usually the exception address pinpoints the driver/function that caused the problem. Always note this address as well as the link date of the driver/image that contains this address.
Arg1: c0000005, The exception code that was not handled
Arg2: 801419d3, The address that the exception occurred at
Arg3: 00000000, Parameter 0 of the exception
Arg4: 617470e5, Parameter 1 of the exception
This issue occurs because of a problem in the hotfix that is described in Microsoft Knowledge Base article 831418. After you install the hotfix that is described in article 831418, the memory that is allocated for the Win32Thread object is sometimes released two times.
For more information about the hotfix that is described in article 831418, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/831418/ )You receive a "Stop 0x50" error message when you shut down a Windows NT 4.0-based computer
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=supportNote 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.
PrerequisitesYou must have installed Windows NT Server 4.0 Terminal Server Edition SP6 to apply this hotfix.
Restart informationYou must restart your computer after you apply this hotfix.
Registry informationYou do not have to change the registry.
Hotfix file informationThe 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 item in Control Panel.
Collapse this tableExpand this table
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Stack Dump Information
STOP 0x50: f216cde4 8014c3cb 00000000 a9f92000 00000000 nt!MmAccessFault+0x35e f216cde4 801309f7 00000000 a9f92000 00000000 nt!KiTrap0E+0xc7 f216ce90 8010b297 a9f92eb0 b1a76ee4 00000000 nt!MmFreeSpecialPool+0x51 f216cebc 8010b1ef a9f92eb0 00000000 801a4433 nt!ExFreePoolWithTag+0x25 f216cec8 801a4433 a9f92eb0 8015b600 b1a76dc0 nt!ExFreePool+0xb f216cef4 8014913c 0000109f 0012f9cc 00000000 nt!PsConvertToGuiThread+0x25f f45ccf10 f6a6cb42 f6a6cb9b 00000000 00000000 nt!KiEndUnexpectedRange+0xc 00000000 00000000 00000000 00000000 00000000 srv!DequeueAndProcessWorkItem+0x5c STOP 0x1E: eb838d90 8014a01d eb838dac 00000000 eb838e00 nt!KiDispatchException+0x35e eb838df8 80149fcd e264d7a8 00000000 80d13ce8 nt!CommonDispatchException+0x4d eb838df8 801419d3 e264d7a8 00000000 80d13ce8 nt!KiUnexpectedInterruptTail+0x1ee eb838e88 8010b422 61746f51 00000001 00000160 nt!PsReturnPoolQuota+0x11 eb838ebc 8010b1ef e264d7a8 00000000 801a4433 nt!ExFreePoolWithTag+0x1b0 eb838ec8 801a4433 e264d7a8 8015b600 80da3540 nt!ExFreePool+0xb eb838ef4 8014913c 0000109f 0012f9cc 00000000 nt!PsConvertToGuiThread+0x25f eb964f10 f6b0cb42 f6b0cb9b 00000000 00000000 nt!KiEndUnexpectedRange+0xc 00000000 00000000 00000000 00000000 00000000 srv!DequeueAndProcessWorkItem+0x5c
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates