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

Summary

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.

Status
Launched
General availability target
May 2026
Preview target
Not published
Products
Exchange
Clouds
Worldwide (Standard Multi-Tenant)
Release phases
General Availability
Platforms
Desktop
Added to the roadmap
27 Apr 2026
Last changed
5 Jun 2026 · 4mo ago
recently changed
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