Protocol updates for Office 2016 and Skype for Business 2016 are here!

At the beginning of this month, we released major updates to the Open Specifications technical documents to include support for the retail release of Office Desktop Client 2016 and Windows 10. The documents listed below were previously released, and many also include minor corrections and bug fixes made since the last time these documents were published. For those who…

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Viewing WOPI Traffic in Action Using Message Analyzer

This article demonstrates how to use Microsoft Message Analyzer to capture MS-WOPI protocol traffic and the payload it carries during a conversation between a SharePoint server (WOPI server) and an Office Web Apps Server (WOPI client). High-level view of the MS-WOPI Protocol As implemented in the Office Web Apps Server, the key role for the…

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Discovering the Underlying Office Protocols Using Microsoft Message Analyzer

Back in September of 2014, Microsoft announced the release of a new network analysis tool, Message Analyzer (MA). According to the release announcement, MA offers developers and IT professionals a powerful new way to capture and analyze packets from an application layer perspective. This is accomplished through the use of Open Protocol Notation (OPN)—a text-based…

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Microsoft Office Binary File Format Validation

Many of you are aware that Microsoft Office 2010 shipped with a feature called Office File Validation that validated untrusted binary file formats (BFF) upon load by the application. This feature increased application security and provided users with an opportunity to opt out of opening a potentially dangerous file. The Office File Validation  feature will…


Interoperability Videos and Presentations

We have recently completed posting a collection of videos from our Office Binary File Format Plugfest Event on our MSDN Channel 9 blog. There are six presentations from the event that we posted and one presentation from a SharePoint event we hosted back in June.  In addition to SharePoint and File Format topics, there are also…