How to Tell If a Worksheet Is Protected in Microsoft Excel 2003

Single Worksheet
1. Click on the 'Tools' menu.
2. Select 'Protection->Protect Sheet.'
3. Read the dialog box. If 'Protect worksheet and contents of locked cells' is checked, the sheet is protected.
Workbook (All Worksheets)
4. Open the workbook. If you cannot open the workbook, it is protected at the file level.
5. Add another worksheet to the workbook. If you can't add another sheet, the workbook is protected.
6. Resize the Excel window. If you can't, the workbook is protected.