VBA – Unhide All Worksheets
Unhide All Worksheets in Workbook
The following is a macro to unhide all worksheets in a workbook.
Sub UnhideAll()
Dim WS As Worksheet
For Each WS In Worksheets
WS.Visible = True
Next
End Sub
Check Workbook for Hidden Worksheets
If you suspect there are hidden worksheets in a workbook, follow these steps to check for hidden sheets:
1. Open the VB Editor (ALT + F11)
2. In the Project Explorer, expand the Project for your workbook
3. Expand the Excel objects for your workbook
Do you see more sheets listed in the Project Explorer than appear in your workbook?

If the answer is Yes, it’s most likely because one or more sheets are hidden.