check before: 2026-01-01
Product:
Exchange, Outlook, Purview, Purview Communication Compliance, Purview Data Loss Prevention, Purview Information Protection, Windows
Platform:
Online, US Instances, Windows Desktop, World tenant
Status:
Rolling out
Change type:
New feature, User impact, Admin impact
Links:
Details:
Summary:
New Outlook for Windows will offer a customizable oversharing dialog for DLP, allowing admins to tailor messages with multi-language support, business justifications, and dynamic tokens. Rolling out globally from January 2026, the feature is off by default and configurable via the Compliance portal.
Details:
[Introduction]
New Outlook for Windows will now support the ability to show a customizable oversharing dialog for Data Loss Prevention (DLP). This enhancement allows organizations to tailor the experience for end users when oversharing is detected, improving clarity and compliance.
This message is associated with Microsoft 365 Roadmap ID 498921.
[When this will happen]
General Availability (Worldwide): Rollout begins in early January 2026 and is expected to complete by late January 2026.
General Availability (GCC): Rollout begins in early February 2026 and is expected to complete by late February 2026.
Change Category:
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Scope:
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Release Phase:
General Availability
Created:
2025-12-23
updated:
2025-12-23
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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linked item details
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summary for non-techies**
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Direct effects for Operations**
User Experience Impact from DLP Oversharing Dialog
If the customizable oversharing dialog is enabled without proper preparation, users may receive confusing or unclear messages when attempting to share sensitive information, leading to frustration and potential non-compliance with data policies.
- roles: End Users, Compliance Officers
- references: https://learn.microsoft.com/purview/dlp-ol365-win32-policy-tips, https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=498921
Admin Configuration Challenges
Admins may face challenges in managing DLP settings effectively if the new feature is rolled out without prior training or documentation, leading to misconfigurations and inconsistent user experiences.
- roles: IT Administrators, Compliance Managers
- references: https://learn.microsoft.com/purview/dlp-ol365-win32-policy-tips, https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=498921
Configutation Options**
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Data Protection**
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explanation for non-techies**
Microsoft Outlook is introducing a new feature in January 2026 that allows for a customizable oversharing dialog to enhance Data Loss Prevention (DLP). This feature is like a personalized warning system that alerts users when they might be sharing too much information. Imagine it as a friendly security guard who knows your company's rules and gently reminds you when you're about to step over the line.
For instance, if you're about to send an email with sensitive information to someone outside your organization, the new dialog box will pop up. It's like having a sign at a door that says, "Are you sure you want to exit?" but tailored to your specific needs. This dialog can be customized with messages in different languages, justifications for why the information is being shared, and dynamic tokens that adjust based on the recipients or the content being shared.
Admins can think of this feature as a customizable toolkit. They can set it up to show messages in up to 10 languages, offer business justification options, and use dynamic tokens to provide specific details about the content being shared. It's similar to how a restaurant menu can be customized to include dishes in multiple languages, with options for different dietary needs and detailed descriptions of each dish.
This feature is off by default, meaning it's like a tool in a toolbox that isn't used until you decide to take it out and set it up. Admins will need to configure it through the Compliance portal if they want to enable it. If you're already using a similar feature in the classic version of Outlook, the transition to the new Outlook will be seamless, like switching from one model of a car to the latest version without needing to learn how to drive all over again.
No immediate action is required unless you want to start using this feature. If you do, you'll need to configure the settings to suit your organization's needs. This feature is designed to help maintain compliance and prevent data loss, acting as a proactive measure to safeguard sensitive information.
** AI generated content. This information must be reviewed before use.
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Last updated 1 month ago ago
