DOCUMENT:Q166089  10-AUG-2001  [winnt]
TITLE   :Event ID 7020: Circular Dependency Afd Service Depends on...
PRODUCT :Microsoft Windows NT
PROD/VER::4.0
OPER/SYS:
KEYWORDS:kbnetwork

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Windows NT Workstation version 4.0 
 - Microsoft Windows NT Server version 4.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

After you upgrade from Windows NT version 3.1 or 3.51 to Windows NT version 4.0,
the following message may appear in Event Viewer:

   Event ID 7020: EVENT_DEPEND_ON_LATER_SERVICE: Circular Dependency -
   The Afd service depends on a service in a group that starts later.

CAUSE
=====

This behavior can occur if information in the registry is not updated or removed
during the upgrade process.

RESOLUTION
==========

WARNING: Using Registry Editor incorrectly can cause serious, system-wide
problems that may require you to reinstall Windows NT to correct them. Microsoft
cannot guarantee that any problems resulting from the use of Registry Editor can
be solved. Use this tool at your own risk.

To resolve this issue, follow these steps:

1. Start Registry Editor (Regedt32.exe) and locate the following registry subkey
   in the HKEY_LOCAL_MACHINE subtree:

   SYSTEM\CurrentControlSet\Services\Afd

2. Locate the DependOnGroup value and then double-click it.

3. Delete the current value, and then click OK.


4. The value should appear as follows:

      DependOnGroup:REG_MULTI_SZ:

5. Quit Registry Editor and then restart your computer.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT. We are researching
this problem and will post new information here in the Microsoft Knowledge Base
as it becomes available.

Additional query words: afd.sys ntw nts

======================================================================
Keywords          : kbnetwork 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : :4.0

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 2001.