To unfreeze panes in Microsoft Excel, open the View tab on the ribbon and click on the Freeze Panes button in the Window group. You will see a dropdown menu where you have to choose the Unfreeze Panes option. That will remove any frozen rows or columns, so the worksheet will scroll as usual. If you had frozen only the top row or the first column, the same Unfreeze Panes option would clear those settings, too. After unfreezing, you will be able to scroll around freely, and if you want, you can set a new freeze by picking Freeze Top Row, Freeze First Column, or Freeze Panes.