Microsoft Roadmap, messagecenter and blogs updates from 12-04-2026

Updated April 10, 2026: We have updated the timeline. Thank you for your patience. 

[Introduction]

Microsoft is introducing a major evolution of Purview Data Security Posture Management (DSPM) to help organizations strengthen data security and confidently embrace AI. The new DSPM experience unifies visibility and control across traditional data and AI-driven environments, delivering outcome-based guided workflows that turn insights into actionable steps—so teams can prioritize risks and remediate faster. It brings AI observability, enhanced posture reporting, and intelligent Security Copilot agents to automate tasks like triage and policy management.

Purview now also extends coverage beyond Microsoft data with third-party signals from partners like BigID, Cyera, OneTrust, and Varonis, giving security teams a single, streamlined view of sensitive data across clouds and platforms. Additionally, Data Risk Assessments are extended to Fabric and item-level analysis with new remediation actions like bulk disabling of overshared SharePoint links.

This message is associated with Microsoft 365 Roadmap ID 532728.

When this will happen:

• Public Preview (Worldwide): Rollout begins early December 2025 and completes by early April 2026.
• General Availability (Worldwide): Rollout begins early May 2026 (previously early June) and completes by late May 2026 (previously early June).

How this affects your organization:

• Who is affected: Admins managing Microsoft Purview DSPM.
• What will happen:
  • Customers will continue to have access to the current DSPM (classic) and DSPM for AI (classic) experiences.
  • Existing policies and configurations remain unchanged.
  • The new DSPM experience and its features will be available in addition to existing experiences.
  • No default policy changes; onboarding steps from classic experiences carry over.

What you can do to prepare:

• No action is required from admins.
• For customers already onboarded to DSPM (classic) and DSPM for AI (classic), onboarding steps will automatically carry over.

Learn more:

• Learn how Microsoft Purview Data Security Posture Management for AI provides data security and compliance protections for Copilots and other generative AI apps | Microsoft Learn (will be updated before rollout)
• Learn about Data Security Posture Management | Microsoft Learn (will be updated before rollout)

Compliance considerations:

Updated April 10, 2026: We have updated the timeline. Thank you for your patience. 

[Introduction]

We’re introducing a new capability in Microsoft Purview eDiscovery (Premium) that allows eDiscovery users to add a statistical sample of search results to a review set. This enhancement helps organizations validate search results earlier in the investigation process, improving confidence in data relevance before committing all results to review.

With this update, reviewers can include a representative subset of items based on configurable sampling criteria, enabling faster early‑stage assessment while reducing review volume. 

This message is associated with Microsoft 365 Roadmap ID 516578.

[When this will happen]

General Availability (Worldwide): Rollout will begin in mid-March 2026 (previously late February) and is expected to complete by late March 2026 (previously late February).

General Availability (GCC, GCCH, and DoD): Rollout will begin in mid-March 2026 (previously early March) and is expected to complete by end of April 2026 (previously late March).

[How this affects your organization]

Who is affected: Administrators and eDiscovery (Premium) users who manage or review search results and review sets in Microsoft Purview.

What will happen:

• This change does not impact any other Microsoft Purview or Microsoft 365 services.
• Users will see new sampling options after search statistics have been generated for a search.
• Users can choose to add all search results to a review set or add a sample of results based on configurable statistical inputs.
• When sampling is selected, reviewers can specify:
  • Confidence level
  • Confidence interval
  • Percentage‑based sampling options
• This capability integrates with existing eDiscovery workflows.
• No changes are made to permissions, access controls, or review set behaviors.
• No features are being removed or replaced.
• The feature will be available by default when it reaches your tenant.

[What you can do to prepare]

No prerequisites are required, and no action is needed to prepare for this change. The capability will become available automatically.

If helpful, you may consider:

• Reviewing internal eDiscovery workflows.
• Updating training or documentation to reflect how sampling can support early validation of search results.

Learn more about eDiscovery: Learn about eDiscovery solutions | Microsoft Learn

Learn more about adding search results to review set: Add search results to a review set in eDiscovery | Microsoft Learn

[Compliance considerations]

No compliance considerations identified. Review as appropriate for your organization.

[Introduction]

We will complete the retirement of the Microsoft Outlook Lite app on Android on May 25, 2026. As previously communicated in MC1148534, Outlook Lite will be retired as part of our broader effort to reduce overlap and focus development and support on Microsoft Outlook Mobile, our primary mobile email experience. After this change, Outlook Lite will no longer provide functional access to mailbox features. 

[When this will happen]

• October 6, 2025: New installations of the Outlook Lite app were blocked.
• May 25, 2026: Outlook Lite will be fully retired and will no longer provide mailbox functionality for existing users.

[How this affects your organization]

Who is affected

Organizations with users who currently have the Outlook Lite app installed on Android devices

What will happen

• After May 25, 2026:
  • Users will be able to launch the Outlook Lite app.
  • Mailbox access will be disabled.
  • In‑app navigation and functionality will no longer work.
• User accounts will not be deleted or disabled.
• All existing email, calendar items, and attachments will remain accessible when users sign in to Microsoft Outlook Mobile.
• This change does not affect tenant‑level configurations, policies, or service availability.

[What you can do to prepare]

• No admin action is required.
• Notify users who may still be using Outlook Lite about the upcoming retirement.
• Encourage users to install and sign in to Microsoft Outlook Mobile from the Google Play Store.
• Update internal documentation or helpdesk guidance if Outlook Lite is referenced.

Recommended alternative: Microsoft Outlook Mobile

Users can switch by:

• Selecting the Upgrade option in the Outlook Lite app (if available), or
• Opening the Google Play Store, searching for Microsoft Outlook, installing the app, and signing in with existing credentials.

Learn more: 

• Outlook for iOS and Android Quick Start | Microsoft Support
• Outlook for iOS & Android FAQ | Microsoft Support

[Compliance considerations]

[Introduction]

As part of our ongoing security hardening efforts, we have enhanced the security posture of the Microsoft Defender for Endpoint (MDE) mobile app. These security updates are available only in app versions released on or after February 2026.

To ensure devices are protected by the latest security updates, reliability improvements, and platform capabilities, Microsoft will retire older MDE mobile app versions released prior to February 2026 on iOS and Android.

[When this will happen]

Microsoft will retire older MDE mobile app versions released before February 2026 starting on May 10, 2026.

This change will be implemented in a phased manner across tenants.

[How this affects your organization]

Who is affected

Microsoft 365 tenants with devices running Microsoft Defender for Endpoint mobile app versions released prior to February 2026 on iOS or Android.

What will happen

Mobile app versions released before the minimum supported builds listed below will be retired.

Starting on May 10, 2026, retired app versions will no longer be able to:

• Connect to Microsoft Defender cloud services
• Receive protection or security updates

Users must upgrade to a supported app version to continue using Microsoft Defender for Endpoint mobile protection.

Minimum supported versions:

• Android: version 1.0.8605.0101 (rollout started February 9, 2026)
• iOS: version 1.1.73270102 (released February 2, 2026)

[What you can do to prepare]

To avoid service disruption prior to May 10, 2026, administrators should:

• Ensure all managed devices are updated to a supported version of the Microsoft Defender for Endpoint mobile app.
• Communicate this change to users who may be affected.
• Update internal documentation or helpdesk guidance to reflect this lifecycle change.

No additional configuration changes are required beyond keeping the app version up to date.

[Compliance considerations]

No compliance considerations identified. Review as appropriate for your organization.

[Introduction]

We’re enhancing the Engage Events experience to provide a more comprehensive and interactive platform for organizational events. This update introduces Broadcast for large-scale produced events, Meetings-based Events, and new capabilities such as moderated feeds and anonymous posting on both web and mobile. Additionally, an Events Landing Page will offer a unified experience for attendees and organizers across all stages: Before, During, and After the event.

Screenshot: Broadcast user interface:

This message is associated with Roadmap ID 537280.

[When this will happen:]

General Availability (Worldwide): Rollout will begin in late April 2026 and is expected to complete by early May 2026.

[How this affects your organization:]

• Who is affected: All Engage customers using Events functionality.
• What will happen:
  • Organizers can create Broadcast Events for large-scale, produced experiences.
  • Support for Meetings-based Events will be available.
  • Organizers can moderate posted questions and conversations during events.
  • Attendees can post questions anonymously via web and mobile.
  • A new Events Landing Page will provide a single location for event engagement before, during, and after the event.
  • No changes to existing workflows; these features will be enabled by default for Engage customers.

[What you can do to prepare:]

• No immediate action is required for most customers.
• Configure Engage Broadcast and Meetings within Engage.
• Review internal documentation and update helpdesk guidance if needed.

Learn more: What’s New with Events in Viva Engage | Microsoft Community Learning YouTube

[Compliance considerations:]

No compliance considerations identified; review as appropriate for your organization.