Microsoft Purview: Data Loss Prevention – Block External Domain/User action in DLP for SharePoint/OneDrive

Originally posted by Microsoft Apr 6, 2026 Uncategorized 0 Comments

Block External Domain/User action in Microsoft Purview DLP for SharePoint and OneDrive, gives organizations stronger control over who can access sensitive files. With this enhancement, admins can configure DLP policies that block file access for specific external domains or individual users. This capability helps prevent unintended exposure by external users and supports enterprise compliance requirements.

Product
Release phase	Preview
Release date	June CY2026 Preview date: May CY2026
Platform	Web
Cloud Instance	Worldwide (Standard Multi-Tenant)
Created	2026-04-02 23:15:15Z
Roadmap ID	557191
Roadmap Link	https://www.microsoft.com/microsoft-365/roadmap?id=557191