Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,295 questions
Exchange server 2016 and 2019 coexistence
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George Gaprindashvili
41
Reputation points
Hi,
We have 2016 and 2019 servers both on premises.
if we create and account which resides on database on 2019 authorization issues happen
like you open OWA properly login and no error message just login does not happen.
if you misspel password red message appears.
So far we see only when account resides on 2019 database.
total 3 servers, 1 CU 20 2016, 2 CU 23 2016 and 3 CU 14 2019
1 and 2 have DAG
3 has no DAG as it is not allowed to DAG 2016 and 2019
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