As Roy and Will have said I too have never solved font size in Message Box’s, but often I do amend things such as font and size in UserForms, you will find this is the way forward but I will never say UserForms can be the easiest development and take a few attempts to get going.
You will need to edit and amend the Properties – UISerform window, and look under Alphabetic there you will see font settings, remember these can be over ridden with VBA Code Lines also.
If you get such on Userforms start a new feed for the UserForm questions I and I know many of OzGrid members do use UserForms extensively. Good luck
Kindest possible regards
Jack in the UK
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