Microsoft KB Archive/134385

= Unable to Open or Copy Files from a NetWare Server on FDDI Ring =

Article ID: 134385

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT 3.5 Service Pack 2
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT 3.5 Service Pack 2
 * Microsoft Windows NT Server 3.51
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q134385





SYMPTOMS
On your computer running Windows NT, you can view files on a Novell NetWare server from File Manager, but you cannot open these files or copy them to a local drive.

The Event Viewer shows the following error:

Event Id 8007: The Microsoft client service for Netware redirector has timed out a request to .

These symptoms occur when you use Windows NT on an Ethernet network segment with Client Services for NetWare (CSNW) or Gateway Services for NetWare (GSNW) installed, and attach to a Novell NetWare server connected to an FDDI ring.



RESOLUTION
To work around this problem:


 * Decrease the packet size from 4202 to 1514 on the NetWare server.

NOTE: This solution negatively impacts the performance of the NetWare server on the FDDI ring.

-or-


 * Set DefaultMaxPacketSize to 1012. To do this:

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.
 * Run Registry Editor (REGEDT32.EXE).
 * From the HKEY_LOCAL_MACHINE subtree, go to the following key:

\SYSTEM\CURRENTCONTROLSET\SERVICES\NWRDR\PARAMETERS
 * Add the following value:

DefaultMaxPacketSize:REG_DWORD: 1012 (decimal)

For more information please see the following article in the Microsoft Knowledge Base:

ARTICLE-ID: 150426 TITLE: Ethernet Packet Size Incorrectly Determined w/ Packet Burst Off

Additional query words: prodnt

Keywords: kbinterop kb3rdparty KB134385

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