In the search box or the Run window, type regedit and press Enter.ĭepending on your version of Windows, you may be asked to confirm that you want to open Registry Editor.
In Windows XP, click the Start button, and then click Run. In Windows 7 or Windows Vista, click Start. In Windows 10 or Windows 8, right-click the Start button and click Run. The following procedure uses the Registry Editor to change the number of undo levels for Excel, although you can do the same in Word or PowerPoint.Ĭlose any Office programs that are running.
Warning: Increasing the number of undo levels should be done with caution and moderation: the more you increase the number of undo levels, the more random access memory (RAM) Excel requires to store the undo history, which affects the performance of Excel.
