Registry: HKEY_CURRENT_USER\Software\Microsoft\Office\X.Y\Word

A radical way to reset all word options and configurations seems to be to delete this very key when Word is not running. In order to have a fall back, it might be a better idea to rename this key so that Word does not find it and creates a new one.

After resetting the options, they might be re-created with PowerShell

The subkeys

• Data
• Options
• Reading Locations
• Security

The parent key HKEY_CURRENT_USER\Software\Microsoft\Office\X.Y