We are facing an issue while opening office documents in SharePoint 2013 using Office Web App Server 2013 (OWA 2013). The below errors happens randomly on sites. Somewhere it works and somewhere it don't in our sites. Below is the error that we are facing.
"Sorry, there was a problem and we can't open this document. If this happens again, try opening the document in Microsoft Word."
Furthermore, we have recently installed below update for OWA 2013. https://support.microsoft.com/en-us/help/3172457/ms17-014-description-of-the-security-update-for-office-web-apps-server
We have tried googling and multiple fixes but so far no luck.