MC1276508 - Complete retirement of the Outlook Lite app

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:

Compliance considerations

Question	Answer
Does this change alter how existing customer data is processed, stored, or accessed?	Yes. After retirement, users will no longer be able to access mailbox data through the Outlook Lite app. All existing data (email, calendar items, and attachments) remains accessible through Microsoft Outlook Mobile.
Does this change modify, interrupt, or disable Purview capabilities?	Yes. Outlook Lite does not support Purview features such as Data Loss Prevention (DLP). Microsoft Outlook Mobile supports applicable Purview capabilities.
Does this change modify how users can access, export, delete, or correct their personal data (GDPR data subject rights)?	Yes. Users will no longer access personal data through Outlook Lite, but can continue to access and manage their data through Microsoft Outlook Mobile.
Does this change include admin controls, such as Entra ID–based management?	Yes. Admins can manage access to Microsoft Outlook Mobile using Entra ID group membership and Conditional Access policies.
Can users enable or disable this feature themselves?	Yes. Users can install or uninstall Microsoft Outlook Mobile independently through the Google Play Store.