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betaPublisher announcementTeamwork and communications | Messaging · September 2026

Teamwork and communications | Messaging: 1 API change passage

What Microsoft published

Month-dated announcement

Updated the getAllRetainedMessages method to document support for retained private-channel message versions captured after the tenant's private-channel storage migration completed.

1 individual passage citations
1 API documentation links
Observed announcement history and complete recorded revisions

What changed

First observed 21 Oct 2026

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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 21 Oct 11:34 UTC · 259 of 260 readable · 257 fully read · documentation 416/439 current