You can use the Undo shortcut (Ctrl Z) to undo multiple steps in applications. When you are working with your document, you can easily undo the action if you make some mistakes. The Undo technique is built in in many computer programs like Word, Excel, PowerPoint, etc. The function of Undo command, just as its name, lets you erase the last change to the document, thus, you can revert file to a previous state. Read More The Function of Undo and Redo Shortcut On Mac: The Undo keyboard shortcut is Command + Z. The Redo shortcut is Ctrl + Y or Ctrl + Shift + Z. On Windows: The Undo shortcut is Ctrl + Z. Check the details about Undo and Redo command below. You can undo the changes with the Undo shortcut even if you have saved the file, or use the Redo shortcut to reverse your last undo action. This post introduces the Undo and Redo shortcut on Windows and Mac. You can use some keyboard shortcuts to make many operation easier on computer. Undo, Redo or Repeat Actions with Your Mouse.To redo an action, you can press Ctrl + Y or Ctrl + Shift + Z on Windows, or press Command + Shift + Z shortcut on Mac. You can easily undo an action by pressing Ctrl + Z on Windows or Command + Z shortcut on Mac. This post introduces the Undo shortcut and Redo shortcut in Word, Excel, other Microsoft applications on Windows or Mac.