Give More Time for Processes to Close at Shutdown

When you shut down Windows, XP gives each process, service or application 20 seconds to close before the operating system turns off the computer. If the process, service, or application doesn't shut down within 20 seconds, a dialog box appears, prompting you to either wait 20 more seconds, immediately end the process, service, or application, or cancel shutdown.

If this dialog box appears frequently, you may be running an application, service, or process that often takes more than 20 seconds to close. To solve the problem, you can increase the amount of time that XP waits to display the dialog box so that the dialog box will no longer appear. To do so, run the Registry Editor and go to HKEY_CURRENT_USER\Control Panel\Desktop. Look for the String value WaitToKillAppTimeout. Edit the value by entering the amount of time you want XP to wait before displaying the dialog box, in milliseconds. The default is 20000, or 20 seconds. If you want XP to wait 25 seconds, enter the value of 25000. Exit the Registry and reboot.