Change a default keyboard shortcut setting?

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There is a keyboard formatting shortcut that I want to use more often, but it does not format the way I like.

That is the Date formatting combination Control+Shift+#.

Currently it is formatting dates as 11-Apr-17. I would like it to format as 4/11/2017.

Does anyone know how to change this?

With one exception I have checked every kind of setting I know of. I find nothing within Excel, systems settings or by Googling.

The one thing I have not explored is Regedit. (I approach that cautiously and only with expert guidance.)

I prefer not to assign a keyboard shortcut to a macro. (Clearing the Undo stack.)

If you know how to make this happen or can redirect me to someone who does I would appreciate it.

Thanks,
Dave

Edit BTW: I failed to mention I am using Excel 2013 on Win10 at the moment. 2007 advise is also welcome.

[AlKey]

Deleted post

[FlameRetired]

Bump.______________________

[FlameRetired]

Anyone? Is this not doable?

[FlameRetired]

Finally! I stumbled across this.

Apparently it can not be done.

If anyone is interested.

http://www.makeuseof.com/tag/make-ex...cuts-easy-way/