Unified Messaging Extension Search

Trying to enable Unified Messaging to an Exchange recipient and it says the extension number is already assigned with another UM-enabled user? Here is a little script that will search your users for you in Exchange and let you know who has it.

$Ext = read-host "Enter Extension to Search" get-mailbox -resultsize unlimited | foreach-object { if($_.extensions -eq $Ext) {write-host $_.DisplayName $_.DistinguishedName} }

The script must be run with the Microsoft.Exchange.Management.PowerShell.Admin snapin loaded in powershell. Simply run that script .\extsearch.ps1 and it will let you know which user has that extension. (it does take some time)