First we connect to Exchange Online via Powershell. First we install or update the MSOnline module.
#Install Set-Executionpolicy RemoteSigned -Scope Process Install-Module -Name ExchangeOnlineManagement Import-Module ExchangeOnlineManagement
#Update Set-Executionpolicy RemoteSigned -Scope Process Update-Module -Name ExchangeOnlineManagement Import-Module ExchangeOnlineManagement
Then we connect:
Connect-MsolService
Now get a list of deleted users:
Get-MsolUser -ReturnDeletedUsers
And here’s how we permanently purge all of them. Do this ONLY if you are certain. There is no going back after this.
Get-MsolUser -ReturnDeletedUsers | Remove-MsolUser -RemoveFromRecycleBin -Force