Exchange Hybrid OWA Redirection in Exchange Online

Andres Bohren
Hi All,

I recently had a customer where the OWA Redirect in Exchange Online (Exchange Hybrid configuration) did not work.
The reason was, that the TargetOWAURL was not set

Get-OrganizationRelationship
Get-OrganizationRelationship -Identity "O365 to On-Prem*" | fl


I have a SharedMailbox OnPrem where my User has FullAccess


In Exchange Online i go to Outlook on the Web https://outlook.office.com/mail/ and select "Open another Mailbox"


I search for the Mailbox and hit "Open"


At this point the Customer was presented an Error
"Something went wrong" OwaUserHasNoMailboxAndNoLicenseAssignedException

But i've set the TargetOWAURL and i get the Link to the OnPrem OWA.
It is basically the OWA URL + Emailadress: https://mail.domain.tld/owa/email@domain.tld


Depending on the configuration of your Exchange Organization you need to login with Domain\Username or UserPrincipalname/Email


As nobody has ever logged into that Mailbox before you will be presented the Languange and  TimeZone dialoge


Now i am logged into the Shared Mailbox on OnPrem OWA




Regards
Andres Bohren