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ECP login gives error X-OWA-Error Microsoft.Exchange.Data.Storage.UserHasNoMailboxException
Hi all, We are in the process of replacing Exchange 2013 servers with Exchange 2016. The Exchange 2013 and 2016 servers reside in different AD sites and all mailboxes (user/arbitration/public-folder...
This isue is solved now. It was caused by an invalid redirect behavior of the L7 Azure Application Gateway that is configured in front of the CAS servers. The L7 paths and default redirect rule is now reconfigured and /ecp is reachable.