We have Exchange 2007 and trying to get hybrid exchange with Office365 online. We have setup Exchange 2013 but when trying to access EAC from the server it is giving below error,
Outlook 500 Unexpected Error :( An error occurred and your request couldn't be completed. Please try again.
Can anyone help to provide what could be the reason? what needs to be configure before accessing EAC from on-premise server?
I am trying to access by https://<FQDN Server Name>/ecp/?ExchClientVer=15
Please help!