A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
There are two different passwords in play here.
- When you open a workbook and are asked for a password, that is the password which locks the file from being opened without the file password.
- When you password protect a worksheet for forms, that is an independent password that locks cells based on the locked property of the cells on the worksheet.
So even though you entered the password to open the workbook, you still need to enter the (probably different) password to unlock the worksheet.