DOCUMENT:Q253445 08-AUG-2001 [winnt] TITLE :System Process Hangs Windows NT with Novell Client 4.6 PRODUCT :Microsoft Windows NT PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS:kbenv kbnetwork 3rdpartynet kb3rdPartyNetClient ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Workstation version 4.0 - Microsoft Windows NT Server version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== A Windows NT 4.0-based server may experience a sudden and steady rise in CPU usage that continues to increase until the server stops responding (hangs). In Task Manager, the System process appears to be responsible for this behavior. CAUSE ===== The Performance Monitor log indicates that immediately before this behavior occurs, there is a dramatic increase in the "Packets received/sec" counter on the server. The Network Monitor log indicates that a Novell server sent a packet to the Windows NT-based server. This packet lets the Windows NT-based server know that the NetWare server has a message for it. The Windows NT-based server responds by requesting the message from the NetWare server. The NetWare server responds with an "Unknown Object" response, but still has a bit set in the response that causes the Windows NT-based server to query again for the message. This creates a continuous loop of requests for the message from Windows NT and denials by NetWare. This locked loop causes the network packet traffic between the servers to run out of control, increasing the CPU usage until the Windows NT-based server hangs. RESOLUTION ========== There is a patch from Novell for the NetWare client to install on the Windows NT-based server. This patch is for the NetWare Client version 4.6 software. For additional information about this patch, see the following Novell article on the Novell Web site: TID10019679 Document Title: Broadcast message causes high workstation utilization. Document ID: 10019679 Solution ID: 1.0.34940405.2363567 Creation Date: 14OCT1999 Modified Date: 15DEC1999 Novell Product Class: NetWare Additional query words: ====================================================================== Keywords : kbenv kbnetwork 3rdpartynet kb3rdPartyNetClient Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 Version : winnt:4.0 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.