How to Restore Microsoft Excel to Its Defaults

Option One
1. Open up Microsoft Excel.
2. Click on the 'Tools' menu and then click 'Customize.'
3. Right-click the menu you want to restore and then click the 'Reset' button. This will restore the menu to its original settings. Consequently, restoring all the menus will restore Microsoft Excel to its defaults.
Option Two
4. Click the 'Help' menu in the upper right-hand corner.
5. Select 'Detect and Repair' from the scroll-down menu. Make sure the 'Restore my shortcuts while repairing' is selected.
6. Click 'Start.' This process will restore Microsoft Excel to its original settings (i.e., how it appeared when you first installed it).