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I have a powershell script that creates a scheduled task using a call to RegisterTask via the Schedule.Service com object.


$ts = new-object -com Schedule.Service
$rootfolder = $ts.GetFolder("\")
$taskXml = Get-Content "Task.xml"
$rootfolder.RegisterTask("\Maintenance", $taskXml, 6, "LOCAL SERVICE", $null, 5)

This works fine on my local machine (windows 7, and I am a local admin)

When I try this on the machine it will be run on, the RegisterTask call fails with ACCESS_DENIED.

However, if I run a command prompt as administrator, then powershell.exe -file myscript.sps1 it works fine and adds the task.

I have ensured that the user that it is running under has permissions to write to the Tasks folders in %windir% and %windir%/system32

The user is in the Administrators group, which is puzzling, what else do I need to do to give the user the permissions to create scheduled tasks? It seems that just adding them to the local administrators group isn't enough.

EDIT: I have logged onto the server as the user that will be running the script. I can successfully import the xml file into the Task Scheduler UI addin manually.

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Did you already create the Maintenance folder? – Ryan Ries Feb 26 '13 at 0:53
No, I didn't need to when running it locally. I also changed the script to create the task in the root folder and get the same issue. – Matt Feb 26 '13 at 1:01

I gave up in the end, couldn't find a way to do this using register tasks, however using schtasks allowed me to import the xml file of the task without the access denied error. I could also use schtasks to import the task to a remote machine.

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