DOCUMENT:Q277715 25-JAN-2002 [winnt] TITLE :BUG: ExitWindowsEx Function Fails to Shut Down the System PRODUCT :Microsoft Windows NT PROD/VER::4.0 SP6,4.0 SP6a OPER/SYS: KEYWORDS:kbGrpDSUser ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server versions 4.0 SP6, 4.0 SP6a ------------------------------------------------------------------------------- SYMPTOMS ======== On a Windows NT 4.0 Service Pack 6 (SP6) or Windows NT 4.0 SP6a-based system, when any application calls the ExitWindowsEx function, the system sends the WM_QUERYENDSESSION message to all top-level windows. If any windows that receive the message return FALSE, the shutdown process is stopped, irrespective of how many windows return TRUE. Any subsequent calls to ExitWindowsEx fail to trigger a reboot or a shutdown operation. RESOLUTION ========== Configure your applications to call the InitiateSystemShutdownEx function to reboot the system. STATUS ====== Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. REFERENCES ========== For additional information, click the article number below to view the article in the Microsoft Knowledge Base: Q245148 Windows NT Appears to Hang When You Log Off After Installing Windows NT 4.0 Service Pack 6 Additional query words: ====================================================================== Keywords : kbGrpDSUser Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400sp6 kbWinNTS400search Version : :4.0 SP6,4.0 SP6a 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 2002.