Update 6/13/2025: Please see our new blog post for updated timelines of releases as well as additional details on how to get from current versions of Exchange Server to Exchange Server SE: Upgrading ...
Updated Jun 13, 2025
Version 14.0
Blog Post
ScottSchnoll Thank you for the details. Could you please help me with advice on the following queries?
1. Currently, we are running Exchange 2019 CU14 on Windows Server 2019. We are considering upgrading to CU15 from CU14 on Windows Server 2019, or should we run Exchange 2019 on Windows Server 2022 to upgrade to CU15? This is because CU15 will support TLS 1.3 but Windows Server 2019 does not support TLS 1.3 correct? https://learn.microsoft.com/en-us/windows/win32/secauthn/protocols-in-tls-ssl--schannel-ssp-
2. When upgrading from Exchange Server 2019 to Exchange Server SE, do we need to install Exchange Server SE on Windows Server 2025 or does it also support Windows Server 2019 and 2022?
3. In Exchange Server SE, do we have any easy solutions to migrate users from old databases to new databases apart from using the Mailbox Migration Job?