Can't open mailbox - OWA

Hi,

In OWA i can't open another mailbox.

I am an administrator and i delegated rights via Powershell (fullaccess).

I am using an E3 account

Experiencing this with any account on this domain.

Please advise.

Kind regards,

Anthony Kersten

error code:

X-OWA-Error: Microsoft.Exchange.Data.Storage.ConnectionFailedTransientException
X-OWA-Version: 15.0.825.2
X-FEServer: DB4PR02CA005
X-BEServer: DB3PR02MB044
Date: 26-11-2013 10:53:54