Microsoft released the preview of Office Online Server (OOS) – the new version of Office Web Apps Server.

OOS provides browser-based versions of Word, Excel, PowerPoint and OneNote to on-premise environments. The Preview version works with products supporting WOPI protocol (SharePoint Server 2016, Skype for Business 2016, Exchange Server 2016).

Here is a quick installation guide.

Prepare server for Office Online Server

1. Open Windows PowerShell as an administrator and run the following command (it will install required Windows Server role and features):
   Add-WindowsFeature Web-Server,Web-Mgmt-Tools,Web-Mgmt-Console,Web-WebServer,Web-Common-Http,Web-Default-Doc,Web-Static-Content,Web-Performance,Web-Stat-Compression,Web-Dyn-Compression,Web-Security,Web-Filtering,Web-Windows-Auth,Web-App-Dev,Web-Net-Ext45,Web-Asp-Net45,Web-ISAPI-Ext,Web-ISAPI-Filter,Web-Includes,InkandHandwritingServices,NET-Framework-Features,NET-Framework-Core,NET-HTTP-Activation,NET-Non-HTTP-Activ,NET-WCF-HTTP-Activation45,Windows-Identity-Foundation
2. Install additional software:
   • .NET Framework 4.5.2
   • Visual C++ Redistributable for Visual Studio 2015
   • Microsoft.IdentityModel.Extention.dll

Install Office Online Server Preview

1. Download the installation disk from Microsoft Download.
2. Mount image and run setup.exe.
3. Follow the installation wizard and install the product.

Configure Office Online Server

1. Open Windows PowerShell as an administrator.
2. Create the OOS farm (for testing purposes I use HTTP communication):
   New-OfficeWebAppsFarm -InternalURL http://servername -AllowHttp –EditingEnabled
3. Allow users to open document from browser:
   Set-OfficeWebAppsFarm –OpenFromURLEnabled
4. Test configuration – simply open http://localhost/hosting/discovery URL on OOS server. You should see a WOPI discovery XML in your browser window.

Configure SharePoint 2016 Preview

1. Log on to the SharePoint 2016 box and run the SharePoint 2016 Management Shell as an administrator
2. Create a binding between SharePoint and OOS
   New-SPWOPIBinding -ServerName servername -AllowHTTP
3. Change the WOPI Zone to use HTTP
   Set-SPWOPIZone -zone “internal-http”
4. Change the AllowOAuthOverHttp
   (Get-SPSecurityTokenServiceConfig).AllowOAuthOverHttp
   $config = (Get-SPSecurityTokenServiceConfig)
   $config.AllowOAuthOverHttp = $true
   $config.Update()
5. Test configuration by opening a document from SharePoint 2016

The Office Online Server Preview works also with SharePoint 2013 and requires the same configuration steps as for SharePoint 2016.