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NFS Access to Windows Server 2008 Fails with Message CPFA0E6

Troubleshooting


Problem

This document describes how to resolve message CPFA0E6 when accessing a mounted directory on a Windows 2008 server.

Resolving The Problem


A NFS mount to a windows 2008 server is successful; however, any attempt to touch the directory fails with
message CPFA0E6,

Message . . . . :   Object handle rejected by file server.  

A communications trace of this failure shows the Windows server returning a NFS2ERR_STALE (Stale file
handle) error. In a Windows 2008 server, significant changes were made to the NFS implementation. To
correct this problem, the following registry key must be changed to a 0.

Important Note:
Caution should always be used when editing the registry values. You should follow proper and safe
methods of editing these values:

HKLM\System\CurrentControlSet\Services\NfsSvr\Parameters\SecureHandleLevel

The default setting is 6. Change this value to 0, and stop and restart the Windows server.

Important Note:
Make sure to unmount first. After stopping and restarting, mount the directory again and attempt to access
the data.

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Historical Number

611958778

Document Information

Modified date:
18 December 2019

UID

nas8N1011332