DOCUMENT:Q217063 08-MAY-2002 [winnt] TITLE :Terminal Server Hangs and Does Not Allow Network Connections PRODUCT :Microsoft Windows NT PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS:_IK ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 4.0, Terminal Server Edition ------------------------------------------------------------------------------- SYMPTOMS ======== Windows NT Server, Terminal Server Edition may stop responding (hang). Even though you may be able to ping the computer, you cannot perform a NET VIEW or make any connections to the it. At this point, you must turn off and then turn the computer back on (hard reset). RESOLUTION ========== To resolve this problem, obtain the latest service pack for Windows NT Server 4.0, Terminal Server Edition. For additional information, please see the following article in the Microsoft Knowledge Base: Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack STATUS ====== Microsoft has confirmed this to be a problem in Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT Server 4.0, Terminal Server Edition Service Pack 4. MORE INFORMATION ================ To verify that you are experiencing this issue, a kernel debugger needs to be attached to the computer and you would need to look at the following to identify this issue: Dd ExWorkerQueue+10 l1 // flink pointer to Critical Queue Dl flink The fourth dword should be the function. Generally, most systems are configured for about nine threads to work off the queue. So, if you see a block of greater than nine to the same function at the top of the queue, that is a good indicator that there is potentially a problem. Run the system a little and see if the top nine addresses change at all. If not, trace through the functions and see if there is any way that the thread could block waiting on additional work to be done in the queue. If so, and if a system runs fast enough (multiprocessor systems) to block all nine, you have a hung system that is running into this problem. Additional query words: 4.00 ====================================================================== Keywords : _IK Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbNTTermServ400 kbNTTermServSearch Version : winnt:4.0 Hardware : ALPHA x86 Issue type : kbbug Solution Type : kbfix ============================================================================= 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.