Knowledge Base

Cannot Open Pipe for NetMN (Access Denied)

Article ID: 165653

Article Last Modified on 10/22/2003

Microsoft SNA Server 3.0 Service Pack 4

This article was previously published under Q165653

SYMPTOMS

The following event will be logged in the application event log when a Netview Connection is defined in the Server Properties page:

Cannot open pipe for NetMN (Access denied)

CAUSE

The problem is caused by missing a registry value.

RESOLUTION

Setup now adds the following registry entry when adding a Netview connection:

   HKEY_LOCAL_MACHINE\CurrentControlSet\Services\LanmanServer\Parameters
      \NullSessionPipes:REG_MULTI_SZ:COMNETMN

To resolve this problem, obtain the hotfix mentioned below.

STATUS

Microsoft has confirmed this to be a problem in SNA Server version 3.0. This problem was corrected in the latest Microsoft SNA Server 3.0 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

Additional query words: sna Netmn

Keywords: kbbug kbfix kbnetwork KB165653