Microsoft Teams integration with Microsoft Defender for Office Tenant/Allow Block List for domains Beta
Data as of 2 hours ago (9 September 2026)
Status Launched
Release month December 2025
Release ring General Availability, Targeted Release
Products Microsoft Defender for Office 365 Microsoft Teams
Cloud instances Worldwide
Platforms Web
Description
Security and IT admins can increase domain-level control with the Tenant Allow/Block List feature in the Microsoft Defender portal to block domains for Microsoft Teams. This post was published previously with incorrect information and has been corrected. We apologize for the inconvenience.
Change history
Added to the roadmap 14 May 2025. Tracked here since 1 September 2026. Earliest target we recorded: December 2025 (since tracked — Microsoft may have moved it before we started watching).
Nothing has changed on this item since tracking began on 1 September 2026. Changes appear here as Microsoft updates the feed.