DOCUMENT:Q255233 10-AUG-2001 [crossnet] TITLE :Windows NT 4.0 Enterprise Edition Domain Controllers May Hang PRODUCT :Windows for Workgroups and Windows NT Networking Issues PROD/VER::4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server, Enterprise Edition version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== Your Microsoft Windows NT 4.0 Enterprise Edition-based domain controllers may stop responding (hang) intermittently. CAUSE ===== This behavior can occur when you upgrade from a beta version of the operating system but the beta versions of Mfc42.dll and Ntlgdsca.exe still remain in the Smslogon\I386 folder. RESOLUTION ========== To resolve this behavior, replace Mfc42.dll and Ntlgdsca.exe with the final version of those files, from the Windows NT Server 4.0 Enterprise Edition CD-ROM. Then either disable and re-enable Logon Discovery to replicate the changes out to all Logon Points, or manually copy the files to each Logon Point (which requires manually stopping the service on each Logon Point). MORE INFORMATION ================ The Smslogon\I386 folder appears only when Logon Discovery is enabled. The folder does not appear if the Windows NT 4.0 client installation option is enabled. Additional query words: ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search Version : :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.