Sometimes, when you try to open or edit an Excel file in Microsoft Office 2003, 2007, 2010, 2013, 2016, 2019, or 365, you may encounter the following problem: Full stepsĮrror 'Excel Cannot Open the File Because The File Format or File Extinction Is Not Valid' Start Office Excel > click File and Open > select the inaccessible Excel file. Open Microsoft Excel and go to 'File' > click Export and choose Change File Type. Launch EaseUS Data Recovery Wizard, and then scan the corrupted or damaged Excel files.
