A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Follow these steps;
Press Windows + R, type regedit, and navigate to HKEY_CURRENT_USER\Software\Microsoft\Office<your Office version>\Excel\Options.
Right-click the Options key and rename it to OptionsOLD (don't delete it, just in case).
Restart Excel — this resets it to default settings.