Protect your worksheets with code with userfaceonly like this
Place this in the Thisworkbook module.
The macro's will be working now
It will only protect the userfaceonly
Right click on the Excel icon next to File in the menubar
And choose View code
You are now in the Thisworkbook module
Paste the Event in this place
Alt-Q to go back to Excel
Private Sub Workbook_Open()
Dim sh As Worksheet
Application.ScreenUpdating = False
For Each sh In ThisWorkbook.Worksheets
sh.Protect "ABCD", , , userinterfaceonly:=True
Next sh
Application.ScreenUpdating = True
End Sub