DOCUMENT:Q165737 09-AUG-2001 [winnt] TITLE :CSNW/GSNW Unable to Connect to NetWare Server PRODUCT :Microsoft Windows NT PROD/VER:WinNT:3.51,4.0 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Workstation versions 3.51, 4.0 - Microsoft Windows NT Server versions 3.51, 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When a computer running Windows NT Workstation or Server 3.51 or 4.0 tries to connect to a NetWare server with IPX checksum-enabled through a NET USE command, the following error message is displayed: System Error 86 - the specified network password is not correct. No connections can be made to the NetWare server. CAUSE ===== The problem is caused when a NetWare server has the following setting in Startup.ncf : SET ENABLE IPX CHECKSUMS=2 Possible server settings: 0= checksums are disabled 1= checksums are used if enabled at the client (default) 2= checksums are required With the checksums value set at 2, Windows NT will try to establish a session with a NetWare server. It is after the session is set up that the NetWare server parses the IPX header for the checksum. At this point, the NetWare server will reject packets from the Windows NT client because the checksum value set in the IPX header is FFFF. Currently, Windows NT does not use the checksum field. WORKAROUND ========== To work around this issue, make the following change in the Startup.ncf file on the NetWare server: ENABLE CHECKSUMS=1 or 0 It is important to note that "checksums only" does a check of the IPX header only, not the data or frame. MORE INFORMATION ================ Windows NT does not implement the checksum feature as it adds unnecessary overhead and only checks the validity of the header. There are no plans for implementing this in the future. ====================================================================== Keywords : kbnetwork Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT351search kbWinNT400search kbWinNTW351search kbWinNTW351 kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351 kbWinNTS351search Version : WinNT:3.51,4.0 Hardware : ALPHA x86 Issue type : kbbug ============================================================================= 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.