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RM496375Outlook: New Outlook Support For GCC-High and DoD

Summary

New Outlook will support the connection of accounts in special environments, starting with GCC-High and DoD. In this release, all mailboxes connected to New Outlook will need to be hosted in the same special environment. Updates regarding rollout to additional specialized cloud environments will be provided in separate roadmap items as soon as projected timelines are available. #newoutlookforwindows

Description

New Outlook will support the connection of accounts in special environments, starting with GCC-High and DoD. In this release, all mailboxes connected to New Outlook will need to be hosted in the same special environment. Updates regarding rollout to additional specialized cloud environments will be provided in separate roadmap items as soon as projected timelines are available. #newoutlookforwindows

GA date: April CY2026

Version history

2 versions tracked

Updated 1 time since Jan 28, 2026. Microsoft 365 Message Center only shows the current version; this archive preserves tracked history.

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  1. May 11, 2026 - 11:15 PMLatest - v2

    Changed: Tags, Release phase

  2. Jan 28, 2026 - 12:00 AMOriginal - v1

    Changed: Initial version

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