M365 Change Tracker

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Launched

Exchange: Dynamic distribution groups now populate membership faster on creation and modification

Why it matters: Generally available

We're updating dynamic distribution groups (DDGs) in Exchange Online to make group membership available sooner after creation or a filter change. For DDGs with 5,000 members or fewer, membership is now populated as part of the creation or modification operation — no more waiting up to 2 hours.

Target May CY2026Cloud WorldwidePlatform DesktopSource updated 2026-06-05

Affected: Exchange

Change history

2026-06-23 · First seen

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