Importing an PST should be fairly simple but for those that don’t eat drink and sleep Exchange may forget that you have to grant permission to certain roles, even for a domain admin account. This is a brand new server with 2008 R2 and Exchagne 2013 installed so I hadn’t run it yet:
New-ManagementRoleAssignment –Role “Mailbox Import Export” –User “domainuser”
Replace domainuser with your domain and user account, that should finish up nicely and now you can…wait I still can’t run the command? Permissions are loaded when the shell starts so you now have to exit the PowerShell window and re-lauch.