Deschide windows powershell,    introdu comanda:  $UserCredential = Get-Credential   si apasa enter

Introdu username-ul si parola contului de exchange.

Introdu comanda de mai jos si apasa Enter:

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

Introdu comanda de mai jos si apasa Enter:

Import-PSSession $Session

Introdu comanda de mai jos si apasa Enter:

Get-Mailbox -ResultSize unlimited | Add-MailboxPermission -User ServiceAccount@domain.com -AccessRights fullaccess -InheritanceType all -Automapping $false