Microsoft Pulls the Plug on OWA Light After Nearly 20 Years of Honorable Service
Microsoft Pulls the Plug on OWA Light After Nearly 20 Years of Honorable Service
Microsoft has announced the end of OWA Light, the simplified variant of the Outlook web client for Exchange Server. The Exchange Team communicated on Wednesday that the feature will be permanently disabled in an upcoming product update, closing a chapter that was opened nearly twenty years ago.
"OWA Light was an important compatibility experience when the web needed it. Today, the full experience of Outlook on the web is the right place to focus," the team explained. According to Microsoft, the removal will serve to "reduce the legacy surface to maintain" and to simplify ongoing engineering work on the product.
OWA Light was born as an alternative to OWA Premium for systems that lacked Internet Explorer 6 or later versions or were equipped with older browsers. At the time of its launch, Microsoft boasted a more streamlined interface, faster access times on narrowband connections, and compatibility with locked browser modes, such as public information kiosks.
Microsoft Disables OWA Light on Exchange
However, the price of that lightness was a reduced set of features. Weekly and monthly calendar views, access to shared mailboxes and calendars, importing and exporting messages and contacts, as well as the ability to create or modify tasks and notes are all missing.
Microsoft had already officially deprecated OWA Light on August 19, 2024. The actual removal from the on-premises Exchange Server environment is expected in August 2026, barring any changes to the roadmap.
"The web has changed significantly since OWA Light was introduced. Modern browsers are more capable and consistent with each other, network conditions have improved for many customers, and the security landscape has changed significantly," the Exchange Team’s note continues. This is a way of saying that the exception designed for a web made of obsolete browsers and slow connections is no longer valid.
After implementing the change, users will no longer be able to select or be redirected to OWA Light: only the modern version of Outlook on the web will remain. However, those who administer an Exchange environment and want to get ahead of the curve can disable the feature now, without waiting for the August update.
The command Set-OwaMailboxPolicy -OwaLightEnabled $false immediately blocks access to the light version, while Set-OwaVirtualDirectory -LogonPageLightSelectionEnabled $false removes the selection entry from the login page. Two lines of PowerShell that effectively close an era of enterprise computing tightly linked to the technical limits of the early 2000s.