Blue Screen Stop 0x41 Error MUST_SUCCEED_POOL_EMPTY (164723)

The information in this article applies to:

Microsoft Windows NT Workstation 4.0
Microsoft Windows NT Server 4.0

This article was previously published under Q164723

SYMPTOMS

The computer displays a blue screen STOP error with the following message:

STOP 0x00000041 MUST_SUCCEED_POOL_EMPTY (0x1000,0x440,0x2E,0x1)

   Parameter 1: The size of the request that could not be satisfied (0x1000)
   Parameter 2: The number of pages used of nonpaged pool (0x440)
   Parameter 3: The number of > PAGE_SIZE requests from nonpaged pool (0x2E)
   Parameter 4: The number of pages available (0x1)

NOTE: Parameter values may vary.

CAUSE

This message is caused when high numbers of UDP packets are received by the server. The receive queue of the server eventually gets backed up and it eventually runs out of memory when allocating memory descriptor lists (MDLs) for the data coming in.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 4.0 This problem was corrected in the latest Microsoft Windows NT 4.0 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Modification Type:	Major	Last Reviewed:	8/8/2001
Keywords:	kbbug KB164723