Word, PDF, PPT Cannot be Opened but Excel, OneNote: Resolving an Extremely Strange Behavior of Office Web Apps 2013   In this scenario, we will be using a freshly installed Office Web Apps 2013 (With SP1) Farm Configured with two nodes – load balanced with Windows NLB and secured via SSL as HTTPS. After all the configuration in OWA Farm and WOPI binding on SharePoint, Excel Files opens perfectly on browser but strangely enough, Word, Excel,…