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Article: Q265324
Product(s): Microsoft Windows NT
Version(s): 2.0
Operating System(s): 
Keyword(s): kbenv kberrmsg
Last Modified: 11-JUN-2002

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The information in this article applies to:

- Microsoft Windows Services for UNIX, version 2.0 
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IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

  Q256986 Description of the Microsoft Windows Registry

SYMPTOMS
========

When you try to mount an NFS shared directory on a Linux server from a Services
for UNIX (SFU) 2.0 client, the Linux server displays the following error
message:

  svc: unknown version (3)

CAUSE
=====

This behavior occurs because Linux only supports NFS version 2.0. By default,
SFU attempts to connect by using NFS version 3.0.

RESOLUTION
==========

WARNING: If you use Registry Editor incorrectly, you may cause serious problems
that may require you to reinstall your operating system. Microsoft cannot
guarantee that you can solve problems that result from using Registry Editor
incorrectly. Use Registry Editor at your own risk.

To disable NFS version 3.0 support in SFU, use the following steps:

1. Start Registry Editor (Regedt32.exe).

2. Locate the following registry key:

  HKEY_LOCAL_MACHINE\Software\Microsoft\Client for NFS\CurrentVersion\Default

3. On the Edit menu, click Add Value, and then add the following registry value:

  Value Name: DisableV3
  Data Type: REG_DWORD
  Value: 1

4. Quit Registry Editor.

Additional query words:

======================================================================
Keywords          : kbenv kberrmsg 
Technology        : kbWinServiceUNIX200 kbWinServiceUNIXSearch
Version           : :2.0
Issue type        : kbprb

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Q265324: Cannot Mount an NFS Share on a Linux NFS Server