August 8, 2026 6:00PM - August 9, 2026 11:59PM SAST
Teraco West - Data Centre 2, Teraco East - Data Centre 1
Global Micro will be performing planned maintenance to upgrade the Hosted Exchange platform to Exchange Server Subscription Edition (SE). No service interruption is expected during this maintenance window.
REASON FOR CHANGE
Global Micro will be upgrading the Hosted Exchange platform from Microsoft Exchange Server 2019 to Microsoft Exchange Server Subscription Edition (SE).
This upgrade ensures the platform remains fully supported by Microsoft, continues to receive security updates, and aligns with Microsoft's long-term roadmap for on-premises Exchange environments.
CUSTOMER IMPACT
Expected Service Impact: Low to None
IMPACT DESCRIPTION
The Hosted Exchange platform has been designed with redundancy to minimize service disruption during maintenance activities.
User mailbox services will remain available on active Exchange nodes while maintenance is performed on passive nodes. Customers are not expected to experience any interruption to email services during the upgrade. However, there may be brief periods of reduced platform redundancy while maintenance is underway.
UNSUPPORTED
What does the end of support for Exchange Server 2019 mean for your organization?
Once Exchange Server 2019 reaches end of support, Microsoft will no longer provide security updates, bug fixes, or technical assistance for the platform. Continuing to operate on an unsupported version may expose organizations to increased security, operational, and compliance risks.
The key considerations include:
1. No Security Updates
Newly discovered vulnerabilities would no longer be addressed by Microsoft, increasing potential security exposure.
2. No Product Support
Microsoft support services would no longer be available for Exchange Server 2019-related issues, potentially increasing the time required to resolve critical incidents.
3. Increased Compliance and Audit Risk
Many security frameworks, regulatory standards, and cyber insurance requirements mandate the use of supported software platforms.
4. Limited Third-Party Vendor Support
Backup, security, archiving, monitoring, and integration vendors may gradually discontinue support for Exchange Server 2019 following its end-of-support date.
5. Higher Operational Risk
Over time, compatibility challenges with newer operating systems, security standards, and Microsoft technologies may become more common.
6. Future Readiness
Upgrading to Exchange Server SE ensures continued support, security updates, and alignment with Microsoft's long-term strategy for on-premises Exchange deployments.
ENHANCEMENTS
Why upgrade to Exchange Server SE?
Exchange Server SE provides a modern, secure, and fully supported platform that enables organizations to:
Continue receiving Microsoft security updates and product improvements.
Maintain eligibility for Microsoft and vendor support services.
Reduce security, operational, and compliance risks.
Ensure compatibility with future Microsoft technologies and supported
7. Outlook clients:
Extend the lifecycle of their on-premises email environment without requiring a migration to Exchange Online.
Benefit from ongoing platform improvements aligned to Microsoft's future Exchange roadmap.
This upgrade is a proactive risk mitigation and business continuity initiative that ensures customers continue to benefit from a secure, reliable, and supported messaging platform.
TCMDB FLAGS
Change Category: Software Change
Urgency: Medium
