Microsoft has announced the complete retirement of Outlook Lite, several months after announcing its plan to retire the app. The Redmond giant said that the Outlook Lite app for Android will be fully retired on May 25, 2026, forcing users to switch to the Microsoft Outlook Mobile app, which better supports all mailbox features and compliance capabilities.
After that date, the Outlook Lite app will still open but mailbox access will be disabled and in-app navigation and functionality won’t work. The retirement shouldn’t affect too many users because Microsoft has purposefully prevented users downloading this app since October 6, 2025. If you do still have it, you should definitely migrate to Outlook Mobile so that you aren’t cut off in late May.
While the mailbox access will be disabled and navigation won’t work, Microsoft notes that user accounts won’t be disabled or deleted. It also said that all existing email, calendar items, and attachments will remain accessible when users sign in to Outlook Mobile.
This change will not require any action on the part of admins, however, it may still be a good idea to let users know that Outlook Lite will be inaccessible soon and guide them on switching to Outlook Mobile from the Google Play Store. Microsoft also suggests updating any affected internal documentation or helpdesk guidance if Outlook Lite is referenced.
Aside from going into the Play Store and finding Outlook Mobile manually, there is also an Upgrade option inside the Outlook Lite app which will send you off to the Play Store to get the latest update. Directing users here could be more straightforward for admins.
To learn more, head over to the Microsoft 365 Admin Center and check under Message ID MC1276508.
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