Exchange: Delete Meetings of terminated users’ in conference room calendars

How to free up the conference room calendar from terminated employees’ meetings? Here are the base line PowerShell commands for you to write a script.

To check if any meetings booked by employees in any of the conference rooms who no longer works in your office:

Get-Mailbox -RecipientTypeDetails RoomMailbox |  Search-Mailbox -Searchquery "kind:meetings from:<DisplayName>" -EstimateResultOnly | Select Identity,ResultItemsCount | ft -AutoSize

Note: Replace <DisplayName> in the command above with terminated user’s display name.

To Delete the meetings booked by the terminated employees:

Get-Mailbox -RecipientTypeDetails RoomMailbox |  Search-Mailbox -Searchquery "kind:meetings from:<DisplayName>" -DeleteContent -Force

Now the script to purge all meeting booked by terminated users.
Note: Change the SEARCHBASE options according to your AD environment. If you remove -SEARCHBASE option from Search-ADAccount command in the script, it will list all disabled accounts from entire domain. 

<#
* * * * * Purge Meetings Booked by Terminated Users * * * * *

Delete meetings from conference rooms booked by employees terminated last 7 days.

Written by: Anand, the Awesome
Created on: 12/21/2018
#>

$dt = date_time 
$logfile = ".\PurgeMeetings-of-termed-users" + $dt + ".log"
Start-Transcript -Path $logfile

#Get the terminiated user list
<#
Note: Important

REPLACE THE SEARCH BASE - BASED ON YOUR AD ENVIRONMENT HERE BELOW
#>
$TermedUsers = Search-ADAccount -AccountDisabled -SearchBase 'OU=Users,DC=corp,DC=company,DC=com'

#List all conference rooms
$ConferenceRooms = Get-Mailbox -RecipientTypeDetails RoomMailbox

foreach($TermedUser in $TermedUsers) 
{
Write-Host "Processing $($Termeduser.Name).."

#Delete tehe meeting booked by terminated user
$ConferenceRooms | Search-Mailbox -Searchquery "kind:meetings from:$($TermedUser.Name)" -DeleteContent -Confirm:$false -Force
}

Stop-Transcript

# * * * End of the Script * * *