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Alan2021
Copper Contributor
Jul 18, 2023

Upgrade exchange 2016 DAG to 2019

My company has exchange 2016 DAG running on several Windows server 2012R2 servers. Since Windows server 2012R2 will be out of support, I plan to upgrade to exchange 2019 DAG running on Windows server 2019. I have a question.  Do I need to create a new DAG to migrate mailbox to it? this can be a problem because people have to reconfigure their Phone/pad to connect to this new DAG. Can I join the new exchange 2019 to the same DAG? 

 

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