Exchange Server 2016, 2019 and SE
Exchange 2016 and 2019 both reached end of support in October 2025. Exchange Server Subscription Edition is the only supported on-prem version going forward, and it requires a subscription plus Software Assurance or a Cloud Server Subscription.
For most businesses the answer is finishing the move to Exchange Online and keeping at most a small management server if hybrid identity still needs it. We handle both paths.
At a glance
| End of support | Exchange 2016 and 2019: October 14, 2025 |
|---|---|
| Current | Exchange Server SE (in-place upgrade from 2019 CU15) |
| Hybrid | Hybrid Configuration Wizard, Exchange Management Tools-only option |
| Security | Emergency Mitigation Service, Extended Protection, regular CU/SU cadence |
What RackLedge does
- Migration to Exchange Online
- Exchange SE upgrade where on-prem must stay
- Last Exchange server decommission
- Hardening and patch management
How we work
Windows Server work follows the roles, not the boxes. Domain controllers, file servers, application servers, RDS and SQL each have their own migration path, and we plan them separately so one cutover does not take everything down. New servers are built from a hardened template with patching, monitoring and backup agents from day one.
Every version has a support date and we track them for you: what is in mainstream support, what is extended, what needs Extended Security Updates and what must move now. Licensing is reviewed at the same time so a refresh does not turn into an audit problem.
Hyper-V, Active Directory, RDS, Exchange and SQL Server are supported as first-class roles, with hardening baselines and documentation handed over at the end of every project.
Related services
More on windows server
Frequently asked questions
Do I still need an Exchange server after moving to 365?
Only for managing mail attributes if you sync from AD. The management tools-only install removes the need for a running server in most cases.
Need a hand with this?
Tell us what you are running and what is slowing you down. You get a straight assessment and a plan, with no obligation. Support desk is staffed 24/7.