You can change the number of Undo levels in Excel. Keep reading to find out how.
To change the number of Undo levels, follow these steps in this registry hack.
Note: Do not attempt to edit the registry unless you are familiar with this process. Any mistakes can damage your OS.
1. Close Excel.
2. Click Start, Run, and type REGEDIT.
3. Go to HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Excel\Options.
4. Right-click in the right pane, and choose New, DWORD Value.
5. Name the new entry UndoHistory, and press ENTER to apply the name.
6. Now, edit the DWORD Value dialog box.
7. In the Base group box, make sure the Decimal option button is selected.
8. In the Value Data text box, enter the number of Undo levels you want (0 to 100).
9. Click OK.
10. Close REGEDIT and you are done.
