DOCUMENT:Q128639 18-DEC-2000 [crossnet] TITLE :MSDLC Hangs Computers Running Processor Speeds Over 66 MHz PRODUCT :Windows for Workgroups and Windows NT Networking Issues PROD/VER:WINDOWS:95; : OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows for Workgroups - Microsoft Windows 3.1 - Microsoft LAN Manager - Microsoft Windows 95 ------------------------------------------------------------------------------- SYMPTOMS ======== When you attempt to load MSDLC.EXE in Windows or Windows for Workgroups with computer processors running at speeds greater than 66 MHz and initiate the host session, Microsoft Data Link Control (MSDLC) either does not respond to host commands or the processor stops responding (hangs) forcing a system reboot. MSDLC.EXE loads fine from MS-DOS. CAUSE ===== The timer routine is not set properly for Pentium processors resulting in unnecessary network traffic. In addition, a FRMR routine ran due to the high network traffic. This is not appropriate for the Class II, CCB II protocol in the DLC stack. This causes the system to hang. STATUS ====== Microsoft has confirmed this to be a problem in MSDLC. A fix to this problem for Microsoft LAN Manager version 2.2 and Microsoft Windows for Workgroups version 3.11 is in development, but has not been regression- tested and may be destabilizing in production environments. Microsoft does not recommend implementing this fix at this time. Contact Microsoft Product Support Services for more information on the availability of this fix. Additional query words: prodnt prodlm22 2.20 2.2c win31x wfw wfwg ====================================================================== Keywords : Technology : kbAudDeveloper kbWin3xSearch kbWin95search kbLanManSearch kbWFWSearch kbZNotKeyword3 kbWin310 Version : WINDOWS:95; : ============================================================================= 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 2000.