Microsoft Excel is one component of Microsoft Office program, which is designed for Microsoft Microsoft and Apple Macintosh operating system. Excel is a very important part of Microsoft Office suite and it can perform calculation, analyze information and manage data from a spreadsheet or web page. It can provide users with many functions. Users can achieve a lot of advantages from it. As a result, it is widely used in many fields, such as management, statistics, finance, etc. So it is very important to keep the Excel spreadsheet securely stored. But what if you accidentally do not save the new created Excel file? Here we’ll take Excel 2010 as an example to teach you how to restore unsaved Excel file.