DOCUMENT:Q177735  19-MAR-1999  [exchange]
TITLE   :XADM: Unable To Access Exchange Administrator Program
PRODUCT :Microsoft Exchange
PROD/VER:WinNT:4.0,5.0,5.5
OPER/SYS:
KEYWORDS:kb3rdparty

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The information in this article applies to:

 - Microsoft Exchange Server, versions 4.0, 5.0, 5.5 
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SYMPTOMS
========

After you upgrade to Microsoft Windows NT Server version 4.0 Service Pack 3
(SP3) from Microsoft Windows NT Server version 4.0 Service Pack 2 (SP2), you are
unable to access the Microsoft Exchange Administrator program either locally or
remotely. You may experience the following symptoms:

 - When you attempt to access the Exchange Administrator program, and you Select
   Browse, you receive the following message:

   Microsoft Exchange Administrator

   The list of Microsoft Exchange Server computers is not available
   because no Microsoft Exchange Server computer could be located.

   Microsoft Exchange Administrator
   ID no c10312c8

   When you manually type the name of the Exchange Server, you receive the error
   message:

   DS_E_COMMUNICATIONS_PROBLEM, connection to the Microsoft Exchange
   Server Computer could not be made

   -or-

 - When you use the Compaq NetFlex-3 network card, network connectivity to a
   computer is intermittently lost and then restored every few minutes without
   having to restart the system.

   -or-

 - Depending on the application, the client or application may have to be
   restarted to restore the connection. If the application has open files on the
   server during this problem, data may be lost.

   -or-

 - Some applications report the lost connections. Others applications may seem
   to stop responding (hang) for several minutes before continuing.

CAUSE
=====

This occurs because Windows NT Server does not detect the newest Compaq
NetFlex-3 adapter card during setup. The drivers for the newer cards have the
same name as the drivers for the old NetFlex-3 cards, and also work with the old
NetFlex-3 cards. Replacing the old NetFlex-3 drivers with the new NetFlex-3
drivers in the I386\Drvlib.nic folder does not allow the new drivers to be
loaded for the old cards.

RESOLUTION
==========

Compaq has supplied a new Ntoemdh.inf file that allows Windows NT to detect and
load the drivers for these new cards, and allows the new drivers to be loaded
for the older NetFlex-3 cards as well.

NOTE: For information on the latest versions of the adapter card drivers, contact
the manufacturer.

For information about how to contact Compaq Computer Corporation, query in the
Knowledge Base for the following article:

   Q65416 Hardware and Software Third-Party Vendor Contact List, A-K


MORE INFORMATION
================

For additional information, please see the following articles in the Microsoft
Knowledge Base:

   Q170950 Intermittent Loss of Connectivity While Using Compaq NetFlex-3

   Q153589 Compaq NetFlex-3/E Controller not Upgraded During WinNT 4.0 Setup


If problems persist after the new drivers have been installed, use Network
Monitor to evaluate the affected Exchange Server computer. For additional
support in this area, contact the Windows NT Server support group.

NetFlex-3 is manufactured by Compaq Computer Corporation, a vendor independent of
Microsoft; we make no warranty, implied or otherwise, regarding this product's
performance or reliability.


Additional query words: netflex3 c10312c8

======================================================================
Keywords          : kb3rdparty 
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2
Version           : WinNT:4.0,5.0,5.5
Hardware          : x86
Issue type        : kbprb

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

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