VBA code that you can use to unhide all hidden worksheets in Excel
VBA Code:
Sub UnhideAllWorksheets()
Dim ws As Worksheet
' Loop through each worksheet in the workbook
For Each ws In ThisWorkbook.Worksheets
' Check if the worksheet is hidden
If ws.Visible = xlSheetHidden Then
' Unhide the worksheet
ws.Visible = xlSheetVisible
End If
Next ws
' Inform the user that all hidden worksheets have been unhidden
MsgBox "All hidden worksheets have been unhidden!"
End Sub