PS export to see if users are sharing their calendar details in Outlook

Hi mdcastorena,

It's great to hear that you're turning to the PowerShell community for assistance. I can try to help you with creating a PowerShell script to export and analyze calendar sharing settings for users in your organization:

# Connect to Exchange Online
$credential = Get-Credential
$exchangeSession = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri "https://outlook.office365.com/powershell-liveid/" -Credential $credential -Authentication "Basic" -AllowRedirection
Import-PSSession $exchangeSession -DisableNameChecking

# Get a list of all user mailboxes
$mailboxes = Get-Mailbox -ResultSize Unlimited

# Initialize an empty array to store the results
$calendarSharingDetails = @()

# Loop through each mailbox
foreach ($mailbox in $mailboxes) {
$mailboxEmail = $mailbox.PrimarySmtpAddress

# Get calendar sharing permissions for the mailbox
$calendarPermissions = Get-MailboxFolderPermission -Identity "$mailboxEmail:\Calendar"

# Loop through each calendar permission and extract the relevant details
foreach ($permission in $calendarPermissions) {
$calendarSharingDetail = New-Object PSObject
$calendarSharingDetail | Add-Member -MemberType NoteProperty -Name "Mailbox" -Value $mailboxEmail
$calendarSharingDetail | Add-Member -MemberType NoteProperty -Name "User" -Value $permission.User
$calendarSharingDetail | Add-Member -MemberType NoteProperty -Name "AccessRights" -Value $permission.AccessRights

$calendarSharingDetails += $calendarSharingDetail
}
}

# Export the results to a CSV file
$calendarSharingDetails | Export-Csv -Path "CalendarSharingDetails.csv" -NoTypeInformation

# Disconnect from Exchange Online
Remove-PSSession $exchangeSession

You'll need the Exchange Online PowerShell module installed to run this script.
About the Exchange Online PowerShell V2 module and V3 module | Microsoft Learn

Once you have the script ready, save it with a .ps1 extension (e.g., CalendarSharingReport.ps1), and then execute it in a PowerShell environment in a path in which the script was saved..

.\CalendarSharingReport.ps1

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Kindest regards

Leon Pavesic