When we logon to outlook web app with a user on exchange 2013 or 2010 everything works fine. When we open another mailbox from there once logged on that recites on exchange 2013 the mailbox opens fine when we open another mailbox that is on exchange we get the following error:
The custom error module does not recognize this error. Can anyone explain why this happens.
Kind regards,
Litrick
Best Answer
It isn't clear which way you are going. Are you starting in Exchange 2013 and opening a mailbox on 2010, or starting on 2010 and opening a mailbox on 2013? Does the URL change in the browser to reflect the server change?
Simon.