DOCUMENT:Q246522 10-AUG-2001 [winnt] TITLE :Windows Clients Cannot Log On to Server Across Router Using IPX PRODUCT :Microsoft Windows NT PROD/VER:WINDOWS:; winnt:4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 4.0 - Microsoft Windows 95 ------------------------------------------------------------------------------- SYMPTOMS ======== When you attempt to log on to a Microsoft Windows NT Server 4.0-based domain from Microsoft Windows 95-based clients configured with the Novell intraNetWare Client and Client for Microsoft Networks and using NWLink as the default protocol, you may receive the following error message: No domain controller could be found to validate your logon. However, you can successfully use these same Windows clients to log on to a NetWare server on the far side of the router. CAUSE ===== This behavior can occur when the network routers are not configured to propagate type 20 packets. By default, most routers do not propagate broadcasts. For the network basic input/output system (NetBIOS) to operate within an NWLink environment, the routers must be able to propagate NetBIOS packets, which are packet type 20 (0x14), across the network. RESOLUTION ========== To resolve this issue, configure the network routers to propagate type 20 packets (0x14) across the network. For instructions on how to do this, refer to the documentation from the router manufacturer. MORE INFORMATION ================ For additional information on Internetwork Packet Exchange (IPX) type 20 NetBIOS packets, please see the following article in the Microsoft Knowledge Base: Q149270 How Routers Handle IPX Type 20 NetBIOS Packets Additional query words: nwlink fail ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWin95search kbZNotKeyword3 Version : WINDOWS:; 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.