You can easily solve this error without the need of any professional experience and help you to access your document without losing data. They start throwing an error “ Microsoft office Quit unexpectedly on Mac” each time when a user tries to open MS Office on OS X Yosemite. Not only Excel but you may also face trouble while trying to open the other Microsoft Office apps like MS Word, MS Powerpoint. Preview the repaired files and click Save File to save the files at desired location.Select the corrupt Excel file (XLS, XLSX) & click Repair to initiate the repair process.