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Support ended

Exchange Server 2016

Support ended on 14 Oct 2025 (12 months ago). The newest release is 15.1.2507.77, published 13 Oct 2026.

Publisher's record

What to do

Exchange Server 2016 no longer receives updates, including security fixes. Move what still runs it to a supported line.

15.1.2507.77Newest release · 1d ago
Ended Support ended 14 Oct 2025
8Releases in the last 12 months · typically every 28 days

Is your version current?

Compared with the publisher's releases of this line

Exchange Server support timeline

From first preview through release to end of support, as the vendors publish them
Exchange Server SE15.2.2562.56
Exchange Server 201915.2.1748.55 · ended 14 Oct 2025
Exchange Server 201615.1.2507.77 · ended 14 Oct 2025

Ticks are releases; the red ones fix CVEs. Dates come from each vendor's release and lifecycle data and move when the vendor changes them.

Releases of Exchange Server 2016

8 collected, newest first
VersionPublishedReleaseWhat the notes say
15.1.2507.77 13 Oct 2026CU23 Oct26SU—
15.1.2507.75 2 Oct 2026CU23 Sep26SUv2—
15.1.2507.73 8 Sep 2026CU23 Sep26SU—
15.1.2507.72 11 Aug 2026CU23 Aug26SU—
15.1.2507.71 14 Jul 2026CU23 Jul26SU—
15.1.2507.69 9 Jun 2026CU23 Jun26SU—
15.1.2507.66 10 Feb 2026CU23 Feb26SU—
15.1.2507.63 9 Dec 2025CU23 Dec25SU—

Open known issues

All Exchange Server issues

What changed

First observed 14 Oct 2026

No field changes in the recorded history.

Cite this recorded revision to keep the same title, summary, facts and links when the page changes.

A day selects the latest observation by the end of that UTC day; today's selection can change until midnight. History starts when this installation records it.

Keep track

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 14 Oct 11:53 UTC · 252 of 253 readable · 251 fully read · documentation 0/409 current

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