

Microsoft Phases Out Office Online Server: Transition to Microsoft 365 Suggested
Microsoft has taken significant steps in refining its range of Office applications, which are available through various platforms, including Microsoft 365 subscriptions, Office LTSC bundles, and the browser-based Office Online. In a recent announcement, the tech giant revealed its intention to discontinue one of its Office offerings: the Office Online Server. This version is set to cease operations by December 31, 2026.
Understanding Office Online Server
For those unfamiliar, Office Online Server is designed for enterprise customers, enabling them to run web-based versions of Office applications in their own on-premises environments. This setup provided a viable option for organizations seeking to maintain control over their data while still benefiting from modern application functionalities. However, as Microsoft shifts its focus towards cloud-based solutions, Office Online Server no longer fits within its emerging strategy.
Reasons Behind the Discontinuation
Microsoft’s decision to retire the Office Online Server is rooted in its commitment to enhancing productivity through cloud-driven innovation. The organization aims to streamline its offerings by prioritizing solutions that align with a ‘cloud-first’ approach, marking a significant shift in how it designs and supports its applications.
Impact of the Discontinuation
Post-retirement, the Office Online Server will no longer receive crucial updates, including security patches or technical support. Consequently, customers still utilizing this service are strongly encouraged to transition to Microsoft 365, which not only adheres to the new cloud-centric vision but also improves team collaboration and operational efficiency.
Transition Recommendations
It’s essential for organizations to begin planning their migration soon, as the transition away from the existing on-prem solution may take time. Microsoft has reassured customers that existing support agreements for other products, such as Exchange Server Subscription Edition, will remain unaffected. Per Microsoft’s statement:
For organizations using SharePoint Server Subscription Edition or Exchange Server Subscription Edition, Microsoft 365 Apps for Enterprise and Office LTSC 2024 remain supported desktop clients for viewing and editing documents hosted on those servers.
If your organization uses Office Online Server to host Excel workbooks in Power BI Report Server, that functionality will no longer be supported. Alternatives include viewing workbooks in the Excel desktop application or migrating to the Power BI service.
Benefits of Transitioning to Microsoft 365
Embracing Microsoft 365 offers numerous advantages, including:
- Real-time collaboration capabilities
- Automatic software updates
- Enhanced security and compliance measures
- Integration with cloud-based products like Teams, Outlook, and SharePoint Online
- Access to innovative features such as Microsoft 365 Copilot
Although the deadline for discontinuation is still more than a year away, Microsoft urges impacted organizations to initiate their transition plans promptly. Engaging in this preparation will ensure a smooth migration to the advanced infrastructure offered by Microsoft 365.
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