Microsoft to retire the OWA Light client in Exchange Server

BleepingComputer

July 9, 2026 at 11:00 AM

Overview

Microsoft is set to retire the Outlook Web Access (OWA) Light client in an upcoming update to Exchange Server. This lightweight version of the email client was designed for users with limited bandwidth or older devices. The discontinuation means that users relying on OWA Light will need to transition to the standard OWA client, which could impact their ability to access email if their devices or connections are not compatible. Microsoft has not yet specified a timeline for the retirement or provided detailed guidance on the transition process. This change could affect organizations with users who depend on the lighter version for remote access, potentially disrupting their workflow.

Key Takeaways

Affected Systems: Outlook Web Access (OWA) Light, Exchange Server
Action Required: Transition to the standard Outlook Web Access client.
Timeline: Disclosed in October 2023

Original Article Summary

Microsoft has announced plans to disable Outlook Web Access (OWA) Light, the lightweight version of the Outlook Web App email client, in a future Exchange Server update. [...]

Impact

Outlook Web Access (OWA) Light, Exchange Server

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Disclosed in October 2023

Remediation

Transition to the standard Outlook Web Access client

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Microsoft, Update.

Read Original Article

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