Service Control Handler May Not Receive SERVICE_CONTROL_SHUTDOWN Notification

ID: Q230449

The information in this article applies to:

SYMPTOMS

The service control handler function and the console control handler function registered by a service may not receive SERVICE_CONTROL_SHUTDOWN or CTRL_SHUTDOWN_EVENT notifications.


CAUSE

This behavior can occur if a user is not logged on locally to the computer and the computer is shut down programmatically (by a program).


RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Windows NT 4.0 service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp
The English version of this fix should have the following file attributes or later: 

   Date      Time               Size      File name     Platform
   -------------------------------------------------------------
   7/8/1999 8:24PM              185 KB    Winlogon.exe  x86
   7/8/1999 8:25PM              268 KB    Winlogon.exe  Alpha

NOTE: If this product was already installed on your computer when you purchased it from the Original Equipment Manufacturer (OEM) and you need this fix, please call the Pay Per Incident number listed on the above Web site. If you contact Microsoft to obtain this fix, and if it is determined that you only require the fix you requested, no fee will be charged. However, if you request additional technical support, and if your no-charge technical support period has expired, or if you are not eligible for standard no-charge technical support, you may be charged a non-refundable fee.

For more information about eligibility for no-charge technical support, see the following article in the Microsoft Knowledge Base:
Q154871 Determining If You Are Eligible for No-Charge Technical Support


STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.


MORE INFORMATION

A program that runs as a service can call RegisterServiceCtrlHandler to register a service control handler function for handling its service control requests, and can register a console control handler using SetConsoleCtrlHandler for receiving control events. If the computer is shut down programmatically by using ExitWindowsEx or InitiateSystemShutdown, the service control handler should receive a SERVICE_CONTROL_SHUTDOWN notification and the console control handler should receive a CTRL_LOGOFF_EVENT notification followed by a CTRL_SHUTDOWN_EVENT notification.

If the computer is shut down manually by the user at the console or programmatically when a user is logged on to the computer locally, the service control handler receives a SERVICE_CONTROL_SHUTDOWN notification and the console control handler receives a CTRL_LOGOFF_EVENT notification followed by a CTRL_SHUTDOWN_EVENT notification as expected.

Additional query words: 


Keywords          : kbbug4.00 kbfix4.00 kbKernBase kbSDKPlatform kbSDKWin32 kbService 
Version           : winnt:4.0 SP4
Platform          : winnt 
Issue type        : kbbug

Last Reviewed: July 30, 1999