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Powershell - Delete Outlook Task from multiple user mailboxes

Is there a way to administratively run a PowerShell script to delete a specific Outlook Task sent out to a subset of users?

Thanks in advance.

Adam the 32-bit Aardvark

You can use the Search-Mailbox cmdlet to delete multiple Outlook elements, such as tasks. The following article shows you how to do it: How to delete email from mailboxes on Exchange 2016 / 2013 / 2010 / Online
In short, you can use the following cmdlet for your purposes:

foreach ($mailbox in (get-mailbox)) {Search-Mailbox -id $mailbox -SearchQuery '(kind:tasks) AND (subject:#keyword#)' -DeleteContent -Force}

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Before you run this command, check if it returns the results you are looking for by replacing -DeleteContent - Force with the -EstimateResultsOnly

Christian Hans

ASKER

Thanks for the assist, unfortunately I get this result:

Cannot process argument transformation on parameter 'Identity'. Cannot convert the "lastname, firstname" value of type
"Deserialized.Microsoft.Exchange.Data.Directory.Management.Mailbox" to type "Microsoft.Exchange.Configuration.Tasks.MailboxOrMailUserIdParameter".
+ CategoryInfo : InvalidData: (:) [Search-Mailbox], ParameterBindin...mationException
+ FullyQualifiedErrorId : ParameterArgumentTransformationError,Search-Mailbox
+ PSComputerName : ps.outlook.com

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Adam the 32-bit Aardvark

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