Get-ExecutionPolicy(Change to RemoteSigned if anything else)

Set-ExecutionPolicy RemoteSigned

$credential

$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection(then enter the credentials of the admin user)

Import-PSSession $Session

Get-PublicFolder “” –Recurse | Add-PublicFolderClientPermission -User Anonymous -AccessRights “CreateItems"