Azure & Office 365

Hi Friends,

Today we will discuss on how to configure Multi Server Office Web Apps farm with a SharePoint farm. Also the specialty of this OWA configuration is that it can work inside and outside of firewall. Normally OWA farms are setup HTTP inside the firewall network(Internal network) and HTTPS outside the network(External world) but using this configuration we will configure HTTPS for both inside and outside network. This will not only decrease additional overhead and configuration but also is recommended by Microsoft to use HTTPS for production environment.

We need to meet below pre-requisites before we proceed further:
1. SharePoint farm configured and ready to use
2. Two or more Office Web Apps servers with setup files
3. One certificate for Office Web App
4. If you are using Windows server 2012 R2 then you would need to install latest update for Office Web Apps
5. FQDN name for your Office web app farm e.g.(owa.domain.com) and its DNS entry with Round Robin(You can also configure Windows NLB or a Load Balancer entry for same)

Installation of Office Web App is very simple, You just need to download the installable and execute it on all OWA servers.

Install Office Web apps on all Office Web Apps servers. If you are using Office Web App on Windows Server 2012 R2, you should install latest update for Office Web Apps. You would need an Office Web app certificate imported to IIS
Now Let’s configure Office Web App, Open Windows PowerShell and execute below command

Once the Office Web App farm is configured, open IIS and make sure SSL binding for site HTTP80 has proper certificate attached.

From IIS binding select the certificate and export the .cer file.
You need to import it to central admin manage trust.

To Attach this Office web app farm to SharePoint farm, you need to create a WOPI connection. Open SharePoint PowerShell on SharePoint server and execute below command:

New-SPWOPIBinding -ServerName “officewebapp.domain.com”

Set Wopi zone

Now if you want to add other Office Web App Server to OWA farm, you need to execute below command on existing OWA server
new-officewebappsmachine -machinetojoin “owa2server.domain.com”

Hope this will help you

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