Do one of the following:
To undo or redo the most recent action, on the Quick Access toolbar, click the Undo or Redo button.
To undo or redo more than one action, click the down arrow next to either the Undo or Redo button on the Quick Access toolbar, and select the actions you want to undo or redo.
Tip:
Broken links cannot be restored with the Undo command.
Certain operations clear the undo list. For example, when you save a file or transition from one environment to another, the undo list is cleared.