Old formats are (XLS, DOC, PPT), new formats end with X like XLSX, DOCX, PPTX.
Think a little and confirm that the file is safe to convert. Even if file extension is not shown, compatibility mode will be shown for older files. As soon as you open a file – check if it is showing compatibility mode. You or your company spent money to buy the latest version… but you are not going to get any returns from that investment Solution is simple Step 1: Notice the Compatibility Mode problem Like this, hundreds of new features will either be disabled or work partially in compatibility mode. For example, even if you have Excel 2013, you will get only 65000 rows, not 1 million rows. In short, you are not going to get most of the new features of the new version. Therefore, Office is downgrading itself and behaving as though it was Office 2003! You are using a new version of Office but you have opened an older version file.
