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Recorded 18 Oct 2026 at 23:19 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.

Guidance timelinelearn.microsoft.com

New Outlook for Windows rollout control

Microsoft's guidance publishes 2 dates, from 31 Dec 2024 to August 2026 (How to enable new Outlook for Windows Public Preview in DoD and GCC High).

Permanent link to this revision

What it said

Block new Outlook installation as part of Mail and Calendar deprecation
31 Dec 2024 · Enforced
How to enable new Outlook for Windows Public Preview in DoD and GCC High
August 2026 · Announced, tentative, conditional
Settings named
GCC-High

What changed

First observed 18 Oct 2026

No field changes in the recorded history.

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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 20 Oct 23:56 UTC · 258 of 260 readable · 256 fully read · documentation 416/439 current

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