Blog Post

Microsoft SharePoint Blog
1 MIN READ

Retirement Date for Office Online Server (OOS) Announced

Dinesh_Hariharan's avatar
Dinesh_Hariharan
Icon for Microsoft rankMicrosoft
Nov 12, 2025
We would like to inform our SharePoint Server on-premises customers that Microsoft has announced the retirement of Office Online Server (OOS), effective December 31, 2026 - Announcing the retirement ...
Updated Nov 12, 2025
Version 6.0
announcements
sharepoint server
itebe780's avatar
itebe780
Brass Contributor
Nov 13, 2025

There are no sense to keep SharePoint SE without OOS, due both are meant to work together, and we cannot allow to have a non-supported security issue on OOS. This is wrong. This is the end of Microsoft support for On-premises, totally incoherent with end of 2035 date for SE. Please rectify, a lot of Governmental, military, banking and sensitivity clients are still not allowed to full migrate to the cloud.