DOCUMENT:Q184744  10-AUG-2001  [winnt]
TITLE   :DHCP Server Leaks Registry Quota on Alpha Version of Windows NT
PRODUCT :Microsoft Windows NT
PROD/VER:WinNT:4.0
OPER/SYS:
KEYWORDS:kbWinNT400sp4fix

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The information in this article applies to:

 - Microsoft Windows NT Server version 4.0 
 - Microsoft Windows NT Server version 4.0, Terminal Server Edition 
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SYMPTOMS
========

A DHCP server running on an Alpha server causes Registry Quota to be leaked over
time. This may result in degraded system performance or the following STOP error
message:

   Stop 0xc000021a e17c7fc8 00000000 00000000

CAUSE
=====

This issue only occurs on Alpha versions of Windows NT 4.0 with DHCP server
installed. The problem is caused by allocating more memory than is deallocate
when saving registry keys. DHCP server periodically leaks Registry Quota during
normal operation, approximately .065 KB every 10 minutes using PerfMon
statistics. This problem is amplified by repeatedly starting and stopping the
DHCP service. The service was found to have 2 leaks, each leaking 2 KB every
time the service was started and stopped.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or
Windows NT Server 4.0, Terminal Server Edition. For additional information,
please see the following article in the Microsoft Knowledge Base:

   Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack


STATUS
======

Microsoft has confirmed this to be a problem in Windows NT 4.0 and Windows NT
Server 4.0, Terminal Server Edition. This problem was first corrected in Windows
NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition
Service Pack 4.


Additional query words: registry memory leak

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Keywords          : kbWinNT400sp4fix 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbNTTermServ400 kbNTTermServSearch
Version           : WinNT:4.0
Hardware          : ALPHA
Issue type        : kbbug
Solution Type     : kbfix

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