To reverse an AutoCorrect adjustment immediately click the Redo button on the Quick Access toolbar.?

To reverse an AutoCorrect adjustment, you can simply click the Undo button on the Quick Access toolbar, rather than the Redo button. The Redo button is used to reapply an action that was just undone. If you want to revert a recent change made by AutoCorrect, Undo is the appropriate choice. Always ensure you're using the correct button for the action you intend to perform.