We are excited to announce the general availability of Exchange Server Subscription Edition (SE). This release continues Microsoft’s long tradition of enabling customers to provide enterprise email s...
Updated Aug 06, 2025
Version 5.0
Blog Post
Hello,
we’re currently running an Exchange Server 2019 hybrid environment (DAG on-prem + Exchange Online) with a few on-prem user mailboxes used for automated system communications (SMTP) - the mailboxes are not being used in Outlook. We migrated from Exchange 2016 to Exchange 2019, using a trial installation of Exchange 2019, which has expired.
We are planning to upgrade to Exchange Server Subscription Edition (SE) and want to ensure the following is supported:
- Can we perform an in-place upgrade from the expired Exchange 2019 trial to Exchange Server SE, or do we need to relicense/reactivate Exchange 2019 first?
- What is the right / best action plan for us in this case
Kindest Regards
Leon
Nino_Bilic
Microsoft
MicrosoftE2019 trial can be upgraded to Exchange SE trial. You will simply be under the same limitations as you have now. Exchange SE will not introduce new server keys until a later update (this is not a RTM change as RTM is basically the same as Exchange 2019 CU15).