Overview
- Microsoft confirmed Monday that Outlook Lite will stop working on May 25, 2026, with mailbox access and in‑app features disabled.
- Users are being directed to the full Outlook Mobile app, with an Upgrade button in Outlook Lite linking to the Google Play Store that admins can point people to.
- Emails, calendar items, attachments, and accounts remain intact and become available again after users sign in to Outlook Mobile.
- New installs were blocked on October 6, 2025, as part of a phased retirement that let existing users keep limited access until the cut‑off.
- The change affects people using the 5MB Lite app built for older Android phones and slow networks, and Microsoft says focusing on one app will improve development focus and security.