TITLE :Multi-Processor Systems Randomly Restart or Stop Responding PRODUCT :winnt WINDOWS -------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Workstation versions 4.0 - Microsoft Windows NT Server versions 4.0 -------------------------------------------------------------------------- SYMPTOMS ======== Windows NT Workstation systems with more than two processors and Windows NT Server systems with more than four processors experience random restarts or stop responding after four to six hours of operation. NOTE: Retail versions of Windows NT Server or Windows NT Workstation do not support the number of processors necessary to experience this problem. Therefore, this problem is only seen on OEM versions of Windows NT. CAUSE ===== There is a problem with some of the functions in Ntoskrnl.exe related to support of Windows NT Workstation systems with more than two processors and Windows NT Server systems with more than four processors. WORKAROUND ========== Obtain the following update or wait for the next Service Pack. ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/usa/nt40 /hotfixes-postSP1/32proc-fix/ STATUS ====== Microsoft has confirmed this to be a problem in Windows NT version 4.00. A supported fix is now available, but has not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information. KBCategory: kbhw kbbug4.00 KBSubcategory: nthw Additional reference words: 4.00 prodnt