Being office lover, as a administrator we have to know about the newer version of software’s in our passionate technology. Yes! We have a new Office online server for the replacement of Office web apps in SharePoint/Exchange.

What is exactly in Office Online Server? When it is used?

Office Online Server is an Office server product that provides browser-based file viewing and editing services for Office files. Office Online Server works with products and services that support WOPI, the Web app Open Platform Interface protocol. These products, known as hosts, include SharePoint Server, and Exchange Server.

When used with SharePoint Server 2016, Office Online Server provides Word Online, Excel Online, PowerPoint Online, and OneNote Online.

When Exchange Server is configured to use Office Online Server, users of Outlook Web App can preview Office file attachments by using Word Online, Excel Online, and PowerPoint Online. These previews provide rich, full-fidelity viewing of Office files and any comments within them, without downloading the files before viewing them.

A graphic that summarizes the viewing and editing capabilities of Office Web Apps on different kinds of devices. It highlights those that are optimized for touch screens.

Keypoints to know about Office Online Server

  • Office Online Server uses the same minimum hardware requirements as SharePoint Server 2016.
  • The 64-bit edition of Windows Server 2012 R2 is required.
  • Install Office Online Server in its own virtual machine. Don’t install any other server applications, such as SharePoint Server, in this virtual machine.
  • When using Hyper-V for multi-server Office Online Server farms, each virtual machine should be on a separate virtual machine host. This way, the Office Online Server farm will still be available if one of the hosts fails.
  • Don’t install any other server applications on the server that’s running Office Online Server. This includes Exchange Server, SharePoint Server, Skype for Business Server, and SQL Server. If you have a shortage of servers, consider running Office Online Server in a virtual machine on one of the servers you have.
  • Don’t install any services or roles that depend on the Web Server (IIS) role on port 80, 443, or 809 because Office Online Server periodically removes web applications on these ports.
  • Don’t install any version of Office. If it’s already installed, you’ll need to uninstall it before you install Office Online Server.
  • Don’t install Office Online Server on a domain controller. It won’t run on a server with Active Directory Domain Services (AD DS).
  • By default, Online Viewers functionality is enabled after you install Office Online Server
  • Certification part is more important for single and multiple OOS installation. Check the best practice before start installing.
  • Office Online Server can communicate with SharePoint Server, Skype for Business Server, and Exchange Server by using the HTTPS protocol. In production environments, we strongly recommend that you use HTTPS.


For more info: Plan for OOS

Next post, we will see how it will deploy in real time!