Microsoft Excel is an important tool for many people in their academic and professional endeavors. One common challenge that users face is encountering the error ...

If you’ve tried to open an Excel file and been met with the dreaded extension not valid error, you probably have a corrupt workbook in your hands. It is common to get the common Excel xls and xlsx ...

The problem can occur when the Word file you are trying to open has a different file extension than the file you are attaching. It happens when you convert the file manually. There can be other ...