Hello guys , you have helped me in the past !

I hope there is someone out there who knows how to do this...

Basicly what Im looking for is a macro which check if the first 3 columns . A-B-C are identical otherwise give a message box which says something like Error: not all the sheets are identical. This macro should work from the moment you start it.. until the moment you shut it down.

Or other solution ,
If someone enters tries to enter something or change something in the first 3 columns in all sheets .. all sheets should be CTRL clicked. So it does it to all the sheets. ( always stays identical)

I hope someone knows a solution.

Yours , Steven