There are a few ways to unprotect an Excel workbook. One way is to use the password protection feature in Excel. To do this, open the workbook and click on the "Review" tab. In the "Protect Sheet" section, enter the password and click "OK". Another way to unprotect a workbook is to use the VBA code. To do this, open the workbook and press "ALT+F11" to open the VBA editor. In the editor, select "ThisWorkbook" from the left-hand pane and then paste the following code into the right-hand pane:

Sub UnprotectWorkbook()

UnprotectWorkbook = True

End Sub

This code will unprotect the workbook.