I am receiving the error "No provisioning handler is installed" when I run the Set-Mailbox cmdlet in normal powershell console.
PS C:\Users\Morgan> Set-Mailbox "Kevin" -GrantSendOnBehalfTo "Morgan" Set-Mailbox : No provisioning handler is installed. At line:1 char:12 + Set-Mailbox <<<< "Kevin" -GrantSendOnBehalfTo "Morgan" + CategoryInfo : NotSpecified: (:) [Set-Mailbox], InvalidOperationException + FullyQualifiedErrorId : 79CAD31B,Microsoft.Exchange.Management.RecipientTasks.SetMailboxFrom this link Exchange 2010 Mailbox Role Install fails - No Provisioning Handler is Installed, I have got the below solution:
Make sure that your account is in the member of: 1. Exchange Organization Administrators (Organization Management group). 2. Local AdministratorsI have added the user account into above two groups but still I faced the same error in Powershell console, but it is working well in Exchange Management Shell.