If Microsoft Project cannot open a file, you can repair corrupted Microsoft Project files by following the solutions mentioned in this post.

Primavera offers XML options compatible with Microsoft Project 2003, 2007 and 2010; MPP for Project 2003; and MPX for older versions of Project. Choose "Microsoft Project" as the file format.

Learn how to open an XML File in Excel, Word, Chrome, and Edge on a Windows computer using the methods mentioned in this post.

An XML-based file format developed by Microsoft and standardized by ECMA. Starting with Microsoft Office 2007, Office Open XML is the default document format for saving applications.

Microsoft has open sourced its Open XML SDK, which will be welcome news for Office developers. The announcement was made by Doug Mahugh on the Microsoft Open Technologies Web site. He blogged that the ...

The Microsoft Office Open XML File Format Converter is a stand-along tool that lets users of older versions of MS Office open and edit documents created in Office 2008 for Mac or Windows 2007 Office.