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How to Configure Office web Apps 2013 to work with Microsoft Lync 2013

Office Web Apps server is the Lync Server 2013 requirement to support the use of PowerPoint presentations in Lync On-line Meetings.

Below are Web App Server Requirements,

Office Web Apps can not be collocated on any Lync server, So I have prepared new virtual machine for Web Apps Server. Web Apps should be joined to domain controller to work with Lync server 2013. I am using Windows 2012 machine for Web Apps server,
Install below Components on Windows 2012 server before you begin with Web Apps Server installation,

Open Windows Power shell & run below commands,
Import-Module ServerManager
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

Office Web Apps Server Installation,

First Download the Office Web Apps Server & start the installation. Web Apps server installation is simple & straight forward. Also Download and install the Office Web Apps Server update KB2810007

After installation we will Configure of Office Web Apps Server. I have imported Web Apps server certificate as shown below.

WebApps Server URLs,

For internal URL I am going to use Internal CA server & for external URL I am going to use GoDaddy wildcard certificate.
Next open Windows Management Shell on Web Apps server for Configuration of Office Web Apps Server and create an web apps server farm. Run below command to create Web Apps Server farm,

New-OfficeWebAppsFarm -InternalURL “https://webappinternal.vmwareandme.com” -ExternalUrl "http://webapp.vmwareandme.com" –CertificateName "WebApps” 

Now open below URL to check the new created Farm

https://webappinternal.vmwareandme.com/hosting/discovery  The output will be as shown below,

If you received any error such as “500 Web Service Exceptions” or “500.21 – Internal Server Error” when you open https://webapp.vmwareandme.com/hosting/discovery then repair .NET by using below command.
For Windows Server 2008 R2
%systemroot%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -iru
iisreset /restart /noforce

For Windows Server 2012
dism /online /enable-feature /featurename:IIS-ASPNET45

Now we have completed WEB Apps server installation & Farm creation. Next step will be configuration of Lync topology,

Now open Lync server topology->Shared Components->Web Apps Server->New Office Web Apps Server

Associate your Web Apps server to Lync Front End Server and Publish Lync topology