Changing virtual directory URLs by using EAC removes all forms of authentication in Exchange Server 2016

Applies to: Exchange Server 2016 Enterprise EditionExchange Server 2016 Standard Edition

Symptoms


If you change the MAPI virtual directory URLs by using the Exchange Admin Center (EAC), all forms of authentication are removed from the MAPI virtual directory.

Resolution


To fix this issue, install Cumulative Update 4 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016.

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References


Learn about the terminology that Microsoft uses to describe software updates.