Workflow does not start when PowerShell Script is run from Task Scheduler

Question

I have a PS script that updates an item in a SP2010 list so that a workflow will be started.  When I run the PS script manually from the PS window on the server it resides, the script runs flawlessly.  If I set a scheduled task on the same server
to run the script with the same credentials as are being used in the PS window, the script runs, updated the info on the list, but DOES NOT start the workflow.  As we know, SPD workflows cannot be started by anonymous or system accounts.  It is as
if the task scheduler adds a bit of information that makes the SP2010 list think the information was updated by one of these accounts even though the field in the list for the item being updated shows the correct account.
HELP!!!
D

Answer 1

Hi,
The issue might be related to the script or schedule task settings your configured. You’d better check the settings.
For example, which option do you set to run the scheduled task? You may select “Run whether user is logged on or not” instead of “run only when user is logged on” as shown in this article:
http://blog.pointbeyond.com/2010/04/23/run-powershell-script-using-windows-server-2008-task-scheduler/
Hope it helps.
Best Regards,
Sally Tang