Novell Client 32 Requestor for Windows 95 and Windows NT Does Not Connect to FPNW (167816)


The information in this article applies to:

  • Microsoft Windows NT Workstation 3.51
  • Microsoft Windows NT Workstation 4.0
  • Microsoft Windows NT Server 3.51
  • Microsoft Windows NT Server 4.0
  • Microsoft File and Print Services for NetWare 3.51
  • Microsoft Services for NetWare 4.0
  • Microsoft Windows 95
This article was previously published under Q167816

SYMPTOMS

NOTE: Information in this article applies to Novell's Client 32 Requestor version 2.11.

When you try to connect to a FPNW server volume from a computer running Windows NT version 3.51, Microsoft Windows NT version 4.0, or Microsoft Windows 95 with Novell's Client 32 Requestor for NetWare loaded, you cannot connect or the following message appears:
A device attached to the system is not functioning.
NOTE: This error will also occur with OS/2 Warp clients.

CAUSE

Case 87 (decimal) NetWare Core Protocol (NCP) packets are normally used to communicate with NetWare 3.x servers. Case 22 (decimal) NCPs are normally used to communicate with NetWare 2.x servers. Novell's Client 32 Requestor for Windows 95 makes use of Case 87 NCP packets with NetWare 3.x servers, and Case 22 NCP packets with NetWare 2.x servers. Novell's Client 32 Requestor for Windows NT uses only case 87 NCPs and cannot communicate with NetWare 2.x servers. Either client software version detects FPNW as a NetWare 3.x server and attempts to converse with it using Case 87 NCPs. FPNW 3.51 and 4.0 (without Windows NT 4.0 Service Pack 2) recognize the Case 87 NCPs required to support Novell's VLM, Microsoft's CSNW/GSNW, and Novell's OS/2 Requestor. However, the case 87 support in FPNW 3.51 and 4.0 (without Service Pack 2) is not complete enough to support Novell's Client 32 Requestor, which was released after either version of FPNW shipped. This incomplete support for all case 87 NCPs causes the earlier error.

RESOLUTION

Windows NT Server Version 4.0 Running FPNW

Apply the latest Windows NT 4.0 service pack to resolve this issue. The latest Windows NT 4.0 service pack contains FPNW enhancements to allow FPNW to communicate using Case 87 NCPs.

If LIP and burst mode were disabled before you installed the service pack, it is strongly recommended that you enable them.

Perform the following steps to enable LIP and burst mode:

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 you own risk.
  1. Use the Services utility in Control Panel to stop the FPNW service or type the following command at a command prompt:

    NET STOP FPNW

  2. Start Registry Editor (Regedt32.exe).
  3. From the HKEY_LOCAL_MACHINE Window, go to the following key:
    System\CurrentControlSet\Services\FPNW\Paramete
  4. Set the EnableBurst value to 1. This is the default value.
  5. Set the EnableLip value to 1. This is the default value.
  6. If present, set the EnableOS2NameSpace value to 1. If the value is not present, it defaults to 1.
  7. Quit Registry Editor.
  8. Shut down and restart the server.

Windows NT Server Version 3.51 Running FPNW

There is no resolution but there is a workaround to the problem when Windows NT Server version 3.51 and FPNW are involved. This section explains the workaround so that a computer running Novell's Client 32 Requestor on Windows 95 can function when communicating with a Windows NT Server version 3.51 computer running FPNW 3.51.

NOTE: This work around only allows Windows 95 workstation computers with Novell's 32-bit NetWare client installed to communicate properly with a Windows NT Server 3.51 computer running FPNW 3.51. Using Novell's 32-bit NetWare client on Windows NT to communicate with an FPNW 3.51 server is not supported.

Apply the latest Windows NT 3.51 service pack to the Windows NT Server version 3.51 computer with FPNW installed. Applying the service pack installs an updated version of Fpnwsrv.sys that permits the registry changes discussed later.

Configuring File and Print Services for NetWare version 3.51 to respond as a NetWare version 2.2 file server allows Novell's Client 32 Requestor to function correctly. Perform the following steps to configure File and Print Services for NetWare in this manner:

NOTE: Making these changes will disable long filename support (OS/2 name space) from clients, as well as support for burst mode and LIP communication.

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.
  1. Use the Services utility in Control Panel to stop the FPNW service or type the following command at a command prompt:

    NET STOP FPNW

  2. Start Registry Editor (Regedt32.exe).
  3. From the HKEY_LOCAL_MACHINE window, go to the following key:
    \System\CurrentControlSet\Services\FPNW\Paramete
  4. Click Add Value from the Edit menu.
  5. Add the following: 
          Value Name: EnableOS2NameSpace
      Data Type:  REG_DWORD
      Data:       0
  6. Change EnableBurst value from 1 (default) to 0.
  7. Change EnableLip value from 1 (default) to 0.
  8. Shut down and restart the server.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Windows NT versions 3.51 and 4.0. This problem has been corrected in the latest U.S. Service Pack for Windows NT version 4.0. 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:MajorLast Reviewed:8/10/2001
Keywords:kb3rdparty kbbug kbhowto kbnetwork KB167816
©2002 Microsoft Corporation. All rights reserved.