EDITORS NOTE 1/3/2019
We have updated the blog to reflect that we've expanded the ability to control if Office attachments are protected for recipients inside Office 365 - previously this was only ...
Updated May 11, 2021
Version 8.0
Blog Post
$UserCredential = Get-Credential
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection
Import-PSSession $Session
Set-IRMConfiguration -DecryptAttachmentFromPortal $true
Output
A parameter cannot be found that matches parameter name 'DecryptAttachmentFromPortal'.
+ CategoryInfo : InvalidArgument: (:) [Set-IRMConfiguration], ParameterBindingException
+ FullyQualifiedErrorId : NamedParameterNotFound,Set-IRMConfiguration
+ PSComputerName : outlook.office365.com