exchange server 2016 cu19 end of life
WHEN 151217614 THEN Exchange 2016 CU19 May21 patched against ProxyShell. Recommend also updating with recent July.
Client Connectivity In An Exchange 2016 Coexistence Environment With Exchange 2010 Microsoft Tech Community
Recommend also updating with recent July Patch WHEN 150149723 THEN Exchange 2013 CU23 Jul21 patched against ProxyShell WHEN 150149718 THEN Exchange 2013 CU23 May21 patched against ProxyShell.
Exchange February 2019 Updates Fixes For Ews Security Flaw
Released March 2021 Exchange Server Security Updates Page 2 Microsoft Tech Community
Released March 2021 Exchange Server Security Updates Page 2 Microsoft Tech Community
Mainstream Support For Exchange 2016 Ends In October 2020
End Of Mainstream Support For Microsoft Exchange Server 2016
Security Update For Exchange Server 2016 Cu18 Kb4581424 Installation Error Microsoft Tech Community
End Of Mainstream Support For Exchange 2016 2wtech 2wtech
Released April 2021 Exchange Server Security Updates Page 3 Microsoft Tech Community
Migrating To Exchange Server 2016