What is OWA Light, and how does it differ from the full version?

OWA Light is a simplified web client for Outlook Web App designed for low-speed internet or outdated browsers. It offers basic email viewing and sending functionality but lacks advanced features available in the full version.

Why is Microsoft discontinuing OWA Light?

Microsoft cites the need to optimize the product, improve security, and focus on developing the full Outlook Web App. Outdated technology and low demand for the lightweight version also contributed to this decision.

How will this affect Exchange Server users?

Users relying on OWA Light must transition to the full Outlook Web App. Administrators are advised to notify employees in advance and ensure browser compatibility with the platform's new requirements.

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Microsoft to Drop OWA Light in Exchange Server Updates

July 9, 2026

Photo: BleepingComputer

Quick answer

Microsoft is retiring OWA Light, the lightweight web client for Exchange Server, in a future update. Users will need to migrate to the full Outlook Web App as the simplified version will no longer be supported.

Microsoft has announced plans to discontinue support for the lightweight Outlook Web Access (OWA Light) client in future Exchange Server updates. This decision will impact users who rely on the simplified web interface for corporate email access.

OWA Light was designed for environments with limited resources, such as slow internet connections or outdated browsers. It provided basic email viewing and sending capabilities but lacked many advanced features available in the full Outlook Web App.

Microsoft explained that the retirement of OWA Light is driven by a focus on modernizing and securing the platform. The company recommends that Exchange Server administrators prepare users for the transition to the full web client version and verify browser compatibility with the new platform requirements.

While the exact timeline for OWA Light's discontinuation has not been specified, the changes are expected to roll out in one of the upcoming major Exchange Server updates. Users and IT professionals are advised to monitor Microsoft's official announcements for timely adaptation to these changes.

Common questions

What is OWA Light, and how does it differ from the full version?: OWA Light is a simplified web client for Outlook Web App designed for low-speed internet or outdated browsers. It offers basic email viewing and sending functionality but lacks advanced features available in the full version.
Why is Microsoft discontinuing OWA Light?: Microsoft cites the need to optimize the product, improve security, and focus on developing the full Outlook Web App. Outdated technology and low demand for the lightweight version also contributed to this decision.
How will this affect Exchange Server users?: Users relying on OWA Light must transition to the full Outlook Web App. Administrators are advised to notify employees in advance and ensure browser compatibility with the platform's new requirements.

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