By default the task can not access network resources so the task would fail.

There are UDFs for scheduling as well.

What clients do you need to support? NT/2000/XP/2003?

What version of KiXtart are you using?

Do your users have Admin rights on their own local systems?


TaskScheduleControl() - Library of UDFs to manage Windows Task Scheduler
http://www.kixhelp.com/udfs/udf/83077.htm

Scheduled Task Control Library for JT.EXE
http://www.kixhelp.com/udfs/udf/111470.htm

SCHEDULETASK() - Schedules a task on any computer using the Task Scheduler
http://www.kixhelp.com/udfs/udf/81888.htm

XP/2003 have a built-in SHUTDOWN command
Quote:

Usage: shutdown [-i | -l | -s | -r | -a] [-f] [-m \\computername] [-t xx] [-c "comment"] [-d up:xx:y
y]

No args Display this message (same as -?)
-i Display GUI interface, must be the first option
-l Log off (cannot be used with -m option)
-s Shutdown the computer
-r Shutdown and restart the computer
-a Abort a system shutdown
-m \\computername Remote computer to shutdown/restart/abort
-t xx Set timeout for shutdown to xx seconds
-c "comment" Shutdown comment (maximum of 127 characters)
-f Forces running applications to close without warning
-d [u][p]:xx:yy The reason code for the shutdown
u is the user code
p is a planned shutdown code
xx is the major reason code (positive integer less than 256)
yy is the minor reason code (positive integer less than 65536)




How To Troubleshoot Scheduled Tasks in Windows XP
http://support.microsoft.com/?id=308558

How To Use the Remote Shutdown Tool to Shut Down and Restart a Computer in Windows 2000
http://support.microsoft.com/?id=317371