Basic authentication is an outdated industry standard, we have been working to help organizations transition to something more secure: OAuth 2.0-based authentication, or what we call Modern authentication (aka Modern auth). Historically, Exchange Server has used Basic authentication (also known as legacy authentication) for client/server and server/server connections. CU13 includes fixes for customer reported issues along with all previously released Security Updates (SUs), including updates in the March 2023 SU.Ī full list of fixes is contained in the KB article for the CU, but we also want to highlight two exciting new features in the CU.
Today we are announcing the availability of the 2023 H1 Cumulative Update (CU) for Exchange Server 2019 (aka CU13).
