The “Excel found unreadable content in .xlsx do you want to recover the contents of this workbook” error is a common issue that users experience when trying to open Excel 2010/2007. This message indicates that Excel has detected content in the file that it cannot interpret or read properly. Therefore, it is important to fix it ASAP. This write-up covers the best fixes to troubleshoot Excel found unreadable content error and get easy access to your Excel file data.