Forum Discussion

Brass Contributor

Apr 20, 2023

Solved

Exchange full hybrid replace 2016 server with 2019

We are running an Exchange 2016 full hybrid set up with O365. We want to move to using an Exchange 2019 server for management and retire the 2016 server. Do we just install the 2019 server using the ...

2016

hybrid

Andres-Bohren
Apr 20, 2023
Hi Eric_Logsdon
> Do we just install the 2019 server using the HCW in with a management license and then retire the 2016 server

That's exactly how you do it.

Don't forget to:
Migrate Certificates / create new Certificate
Assign Certificate to SMTP / IIS
Change Destination on your Reverse Proxy
Change Destination on your Loadbalancer (if you have one)
Regards
Andres

Andres-Bohren

Iron Contributor

Apr 20, 2023

Hi Eric_Logsdon

> Do we just install the 2019 server using the HCW in with a management license and then retire the 2016 server

That's exactly how you do it.

Don't forget to:

Migrate Certificates / create new Certificate
Assign Certificate to SMTP / IIS
Change Destination on your Reverse Proxy
Change Destination on your Loadbalancer (if you have one)

Regards

Andres

mkoprivnj

Copper Contributor

Oct 17, 2023

Hello Andres-Bohren, can you please share some detailed explanations regarding activities that HCW performs on a new Exchange 2019 server? As far as I'm aware, HCW establishes a new connection to O365, and new connectors are created on-premises. Is that correct or there is something else that needs to be considered in the process of replacing Exchange 2016 Hybrid with Exchange 2019 Hybrid which is going to be used only for editing Exchange attributes?

Dan_Snape
Bronze Contributor
Oct 17, 2023
It does do some other stuff as well. High level process is outlined here: https://learn.microsoft.com/en-us/exchange/hybrid-configuration-wizard
- mkoprivnj
  Copper Contributor
  Oct 18, 2023
  Thanks Dan_Snape,
  I have one more concern I want to replace the Exchange 2016 hybrid that is not on the latest CU with the new Exchange 2019 hybrid.
  Do I need to fully update (mandatory prerequisite) the existing Exchange 2016 to the latest CU prior to adding 2019 to an existing organization and reconfiguring HCW?
  
  Thank you for your assistance on this.
  Marko
  - Dan_Snape
    Bronze Contributor
    Oct 19, 2023
    I would firstly recommend that all Exchange servers are kept up to date, but there should be no issues running the HCW again to move to the new Exchange 2019 server (as long as you don't select the legacy servers to be included in the hybrid) without updating the legacy servers first