Hi Dlemma2,

The UNDO is disabled by running a macro. Take note if a macro has just been
run when the UNDO is not working.

I'm not sure if there are other things that disable the UNDO feature.

HTH
Regards,
Howard

"Dlemma2" wrote in message
...
When using the Undo button, the Redo button periodically is not available.
It is sporadic, sometimes allowing me to redo, and other times not (on the
same worksheet). Why does this happen? Is there an Add-in or other
property
setting that I need to adjust?