Alternatively referred to as Control Y and C-y, Ctrl+Y is a shortcut key most often used to redo an undo. For example, if you made a mistake and use the Ctrl+Z shortcut to undo that mistake, but realize it was something you wanted to do, you can press Ctrl+Y.
If the Ctrl+Z key has not been used, the Ctrl+Y shortcut does not work.
How to use the Ctrl+Y shortcut key
On Apple computer keyboards, the Ctrl key is labeled as "control."
Ctrl+Y in an Internet browser
In all major Internet browsers (e.g., Chrome, Edge, Firefox, Opera), pressing Ctrl+Y will redo any undo.
Ctrl+Y in Excel and other spreadsheet programs
Ctrl+Y in Microsoft PowerPoint
In Microsoft PowerPoint, the Ctrl+Y shortcut key will redo any undo.
Ctrl+Y in Outlook
In Microsoft Outlook, pressing Ctrl+Y allows you to go to a folder.
Ctrl+Y in Word and other word processors
Related keyboard shortcuts
Below are links to related keyboard key and keyboard shortcut pages.