You can easily hide and unhide columns in Excel by individually revealing hidden columns or using the "Format" option to unhide all hidden cells.

If you notice that your Excel files are opening in Notepad, then read this post to learn how to fix the issue. The default behavior of a document or file is to open in the application with which it ...

To learn more about these steps, continue reading. There is a special situation, and Microsoft has known it for a long time. Let’s assume that you have multiple Excel windows opened on your computer.