Microsoft plans to disable and remove OWA Light, the lightweight Outlook Web Access client for Exchange Server, in an upcoming update expected in August 2026. The company says retiring the two-decade-old legacy interface will reduce attack surface and engineering complexity, pushing users to the modern Outlook on the web experience instead. BleepingComputer reports: "OWA Light was an important compatibility experience when the web needed it. Today, the full Outlook on the web experience is the right place for us to focus," the Exchange Team said on Wednesday. "Retiring OWA Light will help reduce legacy surface area, simplify ongoing engineering work, and allow us to continue improving the ex...