won't work for mailboxes with same alias name

[officedev]

won't work for mailboxes with same alias name

[mcvic1rj]

This sounds more like a holistic issue with the exchange online module.
@stuartcl @bkoeller Do either of you have a way to report this internally microsoft?

[neospud1]

I don't think it has anything to do with a module. It's just how these commandlets work. Probably best to just write the script in a way that works in the current environment. Anyway.. just mentioning this because microsoft's secure score tool had an item that suggests making this change in the environment and it's self links to this script.

[privateclouds]

this is what worked for us, thanks to beanxyz:

$userCredential = Get-Credential

$ExoSession = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $userCredential -Authentication Basic -AllowRedirection

Import-PSSession $ExoSession

$users=get-mailbox | select name, distinguishedname ;
Foreach($user in $users) { set-mailbox $user.distinguishedname -auditEnabled $true}

$user=Get-Mailbox -ResultSize Unlimited -Filter {RecipientTypeDetails -eq "UserMailbox" -or RecipientTypeDetails -eq "SharedMailbox" -or RecipientTypeDetails -eq "RoomMailbox" -or RecipientTypeDetails -eq "DiscoveryMailbox"} | select name, distinguishedname ;
Foreach($user in $users) { Set-Mailbox $user.distinguishedname -AuditEnabled $true -AuditLogAgeLimit 180 -AuditAdmin Update, MoveToDeletedItems, SoftDelete, HardDelete, SendAs, SendOnBehalf, Create, UpdateFolderPermission -AuditDelegate Update, SoftDelete, HardDelete, SendAs, Create, UpdateFolderPermissions, MoveToDeletedItems, SendOnBehalf -AuditOwner UpdateFolderPermission, MailboxLogin, Create, SoftDelete, HardDelete, Update, MoveToDeletedItems }

Get-Mailbox -ResultSize Unlimited | Select Name, AuditEnabled, AuditLogAgeLimit | Out-Gridview