Forum Discussion
Exchange Server 2016 / 2019 coexistence CU update
Hi, We are running Exchange Server 2016 CU19 and Exchange Server 2019 CU14. We want to install the latest CU for Exchange Server 2016. Can we do this with Exchange Server 2019 CU14 already install...
Upgrading Exchange Server 2016 to its latest CU with Exchange Server 2019 in co-existence will not cause any trouble. The infra will work flawlessly post upgrade.
As per schema doubt is concerned, Exchange server only causes schema expansion, so if there is any additional attribute gets added post Exchange server 2016 CU23, there will not be any impact in its service.
Note: Ensure to keep Exchange 2016 to its latest CU and SU version and Exchange 2019 to its latest CU and (n-1) SU version.