Microsoft is urging administrators to upgrade their outdated Exchange Servers before the end of support in October 2025 to ensure security and stability. They recommend migrating to Exchange Online or upgrading to Exchange Server Subscription Edition to mitigate security risks. #Exchange2016 #Exchange2019 #MicrosoftSecurity
Keypoints
- Exchange Server 2016 and 2019 will reach end of support in October 2025.
- After October 14, 2025, Microsoft will cease providing support and security updates.
- Admins are encouraged to upgrade to Exchange Online or Exchange Server SE.
- In-place upgrades from Exchange Server 2019 to SE are possible via Cumulative Updates.
- Organizations with older Exchange versions must remove them before upgrading to newer ones.