Search code examples
powershellscheduled-taskseventtrigger

Powershell New-ScheduledTaskTrigger recurring task with -RepetitionInterval

I'm finding the errors related to ScheduledTask cmdles give extremely cryptic errors. I want to schedule a test task to run every 1 minute and repeat forever. Here's what I'm trying, but no success: 

cls
#$Action = New-ScheduledTaskAction -Execute "e:\Scripts\TestClusteredTask.cmd"
$DurationTimeSpan = New-TimeSpan -Minutes 1 
$DurationTimeSpanIndefinite = ([TimeSpan]::MaxValue) 
$DurationTempTest = New-TimeSpan -Days 1000
$Trigger = New-ScheduledTaskTrigger -Daily -At "00:01" -RepetitionInterval $DurationTimeSpan -RepetitionDuration $DurationTempTest

also tried this: 

$Trigger = New-ScheduledTaskTrigger -Daily -At "00:01" -RepetitionInterval $DurationTimeSpan -RepeatIndefinitely

Error Output: 

New-ScheduledTaskTrigger : Parameter set cannot be resolved using the specified named parameters.
At C:\Users\nwalters\Documents\AddTestClusteredTask.ps1:6 char:12
+ $Trigger = New-ScheduledTaskTrigger -Daily -At "00:01" -RepetitionInterval $Dura ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [New-ScheduledTaskTrigger], ParameterBindingException
    + FullyQualifiedErrorId : AmbiguousParameterSet,New-ScheduledTaskTrigger

I'm referencing this web page for instructions. http://technet.microsoft.com/en-us/library/hh849759.aspx

Powerhsell Version 4 on Win 2012/R2

Solution

  • According to tech net this is the dataset you are using

    Parameter Set: Daily
New-ScheduledTaskTrigger [-Daily] -At <DateTime> [-DaysInterval <Int32> ] [-RandomDelay <TimeSpan> ] [ <CommonParameters>]

    In your examples you are specifying -RepetitionInterval and -RepetitionDuration which are part of the -Once parameter set. 

    Parameter Set: Once
New-ScheduledTaskTrigger [-Once] -At <DateTime> [-RandomDelay <TimeSpan> ] [-RepetitionDuration <TimeSpan> ] [-RepetitionInterval <TimeSpan> ] [ <CommonParameters>]

    That is why you are getting an ambiguity error. It does not know which parameter set you are using. 

    FullyQualifiedErrorId : AmbiguousParameterSet,New-ScheduledTaskTrigger

    So you need to specify -Once if you want to use those other parameters.