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365Fanatic / Product updates / Purview
Microsoft Purview · Data Loss Prevention

New Block access for specific external domains or users sub-option…

Preview May 2026
SummaryDetailedTimelineProduct updatesThis weekMC SummaryMC DetailedPnP Search

What else is coming for Purview?

Roadmap: Purview →Message Center: Purview →

New Block access for specific external domains or users sub-option for the Restrict access or encrypt the content in Microsoft 365 locations action lets DLP policies for SharePoint and OneDrive block access to sensitive files for specific external domains or user SMTPs. See Actions and Help prevent sharing sensitive items via SharePoint and OneDrive with external users.

Terms in this update

  • DLPData Loss Prevention (DLP) stops sensitive information, such as citizen service numbers or credit card numbers, from leaving…
  • SharePoint OnlineSharePoint Online is the Microsoft 365 cloud service for storing, sharing and managing documents and information in sites.…
  • OneDriveOneDrive is the personal cloud storage for each user's work files in Microsoft 365. It is built on…
View at Microsoft ↗ All Purview updates

This is in the weekly digest for week 39 · What changed this week? →

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Product
Microsoft Purview
Status
Preview
Area
Data Loss Prevention
Released
May 2026

Where to find it

Microsoft Purview portal → Solutions → Data Loss Prevention ↗

Preview: not visible in every tenant yet and may still change.

Microsoft documentation

  • Actions ↗learn.microsoft.com
  • Help prevent sharing sensitive items via SharePoint and OneDrive with external users ↗learn.microsoft.com

Timeline

  1. May 2026Listed by Microsoft

Guides by 365Fanatic

  • Phased DLP rollout on the sensitivity-label schema
  • Disposition review: read items and change them in bulk with PowerShell
  • Sensitivity labels: architecture, schema and phased rollout

More Purview updates

Generally availableSeptember 2026 Integrate Microsoft Entra Global Secure Access with Purview to protect text, files, and AI interactions at the network layer UpdatedAugust 2026 Guidance for DLP policies in Microsoft Edge for Business now explains policy sync status UpdatedAugust 2026 If an Exchange DLP policy uses sensitivity labels as a condition and policy tips while mandatory labeling is enabled UpdatedAugust 2026 In cross-tenant Microsoft Teams chats and channels, DLP policy enforcement follows the tenant that initiated the conversation PreviewAugust 2026 Prepare Endpoint DLP for permission changes in macOS 27 UpdatedAugust 2026 The Endpoint DLP capability comparison now clarifies that policies for access by apps not included…

Text by Microsoft, from Microsoft's documentation. Features and dates may change. Terms and the timeline are added by 365Fanatic.

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