Microsoft Retires Office Online Server
Microsoft is officially retiring Office Online Server (OOS) by December 31, 2026, to focus on cloud-first productivity through Microsoft 365 and Copilot.
Office Online Server was the on-premises version of Office for the web, allowing enterprise customers to host browser-based versions of Word, Excel, and PowerPoint within their infrastructure.
The move is part of the company’s broader effort to streamline its product lineup and prioritize cloud-based experiences powered by Microsoft 365 and Copilot.
The retirement of OOS marks the end of one of Microsoft's key on-premises productivity options, as the company continues to evolve its productivity and AI ecosystem.
Author's summary: Microsoft retires Office Online Server by 2026.