We are happy to announce our work to allow you to disable legacy authentication is available to you with the second cumulative update (CU2) for Exchange 2019. This provides an important step down the...
Updated Jul 01, 2019
Version 2.0
Blog Post
Greg Taylor - EXCHANGE and The_Exchange_Team we have enabled HMA and things seems to run good. But when we set authentication policy (pr user) we see some issues with password dialog boxes (Windows login prompt).
We have found out that it is related to BlockLegacyAuthMapi but ONLY if the client is on DirectAccess. If we disconnect DirectAccess everything seems to run smooth as well as if do it from a virtual client not connected to Direct Access.
We have 2 Exchange 2019 servers in DAG on CU8 with Big IP F5 loadmaster.
Any suggestions?