Retirement of Outlook Lite app

Originally posted by Microsoft Sep 8, 2025 Uncategorized 0 Comments

The Outlook Lite app will retire starting October 6, 2025, blocking new installs and requiring users to switch to the Outlook Mobile app, which offers enhanced features, security, and Microsoft 365 integration. No manual data migration is needed, and admins have control via Entra ID.

Outlook Lite appOutlook Liteapp Outlook Mobile appOutlook Mobile app

When this will happenRetirement begins: October 6th, 2025Full retirement: Expected within a few months after retirement

How this affects your organizationOrganizations will only be impacted if users currently use the Outlook Lite app. After retirement, no new installations will be possible, and eventual retirement will require users to switch to Outlook Mobile app.

What you can do to prepare

• This change will happen automatically by the specified date.
• No admin action is required.
• Please notify your users about this change, update relevant documentation as appropriate, and encourage installation and migration to Outlook Mobile app.

Recommended alternative – Outlook Mobile:

To continue enjoying a secure and feature-rich email experience, we recommend switching to Outlook Mobile. Here’s how to get started:

1. Within the notification section in your Outlook Lite app, select the Install Microsoft Outlook banner.
2. Or open the Google Play Store.
3. Search for Microsoft Outlook.
4. Download and install the app.
5. Log in with existing credentials to access email, calendar, and files.

Data access:

No manual migration is required. All existing data (emails, attachments, calendar entries) will be accessible via Outlook Mobile app upon login.

Learn more:

Feature availability in Outlook Mobile:

• Enhanced security and productivity features
• Access to third-party email accounts
• Seamless integration with Microsoft 365

• Quick Installation
• Quick Start
• FAQs

Compliance considerations

Compliance Area	Impact
Customer data access	Users will no longer be able to access personal data through Outlook Lite app after retirement. Data remains accessible via Outlook Mobile app.
Purview capabilities	DLP enforcement is not supported on Outlook Lite app. Outlook Mobile app supports these capabilities.
Admin control via Entra ID	Admins can manage access to Outlook Mobile app using Entra ID group membership and Conditional Access policies.
User control	Users can install or uninstall Outlook Mobile app independently via the Google Play Store.

Message ID: MC1148534