The record
Written from the 1 report below. Nothing here is unsourced.
- Microsoft has confirmed that the Extended Security Update program for Exchange Server 2016 and 2019 will end in October 2026, with no further extensions.
- After that date, these older Exchange servers will receive no security updates, even for customers who bought the second-period ESU coverage.
- Microsoft is advising IT administrators to upgrade to Exchange Server Subscription Edition or migrate to Exchange Online, with migration guidance available on its documentation site.
What to watch next
- Whether organisations complete upgrades to Exchange Server SE or migrate to Exchange Online before October 2026
- Any security incidents affecting unpatched Exchange 2016/2019 servers after the ESU deadline
- How Microsoft handles the separate Windows 10 consumer ESU program, which runs until October 2027
Coverage1
1 report
International1
All filed from United States
Named United States · Exchange 2016 · Exchange 2019 · Exchange Online · Exchange Server Subscription Edition · Windows 10 · Windows 11 · Windows Server 2022 · Microsoft · Picus
The 1 report is listed beside the record.
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