If Tabs are missing or not showing in your Excel worksheet, it may be due to some changes within your Excel settings. Take these steps to fix the issue.

The lack of a tabbed view in Microsoft Office is really a sore point for people now accustomed to browsing the web with tabs and managing multiple files with tabs in many other applications.

Click the top "View" tab and click "Normal" from the Workbook Views group to return to Normal view. Click the appropriate sheet name at the bottom-left of Excel 2007 to return to a specific sheet.