check before: 2026-05-01
Product:
Exchange, Outlook, Purview, Purview Communication Compliance, Purview Data Loss Prevention, Windows
Platform:
Online, US Instances, Web, World tenant
Status:
Change type:
Feature update, Admin impact
Links:
Details:
Summary:
Outlook on the web will gain a new organization-level setting to switch DLP evaluation from Exchange-based to Data Classification Services (DCS)-based, enabling enhanced features like improved policy tips and “Wait to send.” Rollout starts mid-May 2026, with admins controlling the change via PowerShell.
Details:
Introduction
We are introducing a new organization-level setting that allows admins to migrate Outlook on the web (OWA) from Exchange-based Data Loss Prevention (DLP) policy evaluation to Data Classification Services (DCS)-based DLP policy evaluation. This change brings OWA in line with the new Outlook experience, enabling enhanced capabilities such as the new oversharing policy tips experience and "Wait to send." This update helps provide a more consistent, modern, and scalable DLP experience across Outlook clients.
When this will happen:
General Availability (Worldwide): Rollout will begin mid-May 2026 and complete by late May 2026.
General Availability (GCC): Rollout will begin mid-May 2026 and complete by mid-June 2026.
Change Category:
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Scope:
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Release Phase:
Created:
2026-05-19
updated:
2026-05-19
Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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summary for non-techies**
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Direct effects for Operations**
Data Loss Prevention Policy Changes
Migration from Exchange-based to DCS-based DLP may lead to unsupported predicates, causing existing DLP policies to fail.
- roles: Compliance Admin, IT Administrator
- references: https://learn.microsoft.com/purview/dlp-ol365-win32-policy-tips#sensitive-information-types-that-support-policy-tips-for-outlook-perpetual-users
User Experience Disruption
Users may experience unexpected behavior in DLP features, such as policy tips and 'Wait to send' functionality, leading to confusion.
- roles: End User, Compliance Officer
- references: https://learn.microsoft.com/purview/dlp-ol365-win32-policy-tips#sensitive-information-types-that-support-policy-tips-for-outlook-perpetual-users
Increased Support Requests
Changes in DLP evaluation may lead to an increase in support requests from users facing issues with new features or policy enforcement.
- roles: Help Desk Support, IT Administrator
- references: https://learn.microsoft.com/purview/dlp-ol365-win32-policy-tips#sensitive-information-types-that-support-policy-tips-for-outlook-perpetual-users
Compliance Risks
Shifting DLP evaluation may alter how customer data is processed, potentially leading to compliance violations if not managed properly.
- roles: Compliance Admin, Data Protection Officer
- references: https://learn.microsoft.com/purview/dlp-ol365-win32-policy-tips#sensitive-information-types-that-support-policy-tips-for-outlook-perpetual-users
Documentation and Training Gaps
Internal documentation may become outdated, and staff may require additional training to understand the new DLP features and settings.
- roles: Training Coordinator, Compliance Officer
- references: https://learn.microsoft.com/purview/dlp-ol365-win32-policy-tips#sensitive-information-types-that-support-policy-tips-for-outlook-perpetual-users
Configutation Options**
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Opportunities**
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Potentional Risks**
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Data Protection**
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IT Security**
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Hypothetical Work Council Statement**
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DPIA Draft**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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Last updated 3 weeks ago ago
