Button suddenly does not work

[Man Utd]

I got a button worked before, but it did not work recently.
I opened the workbook, click the button, the button did not fire any event
but only get foucsed (ie, have handles around the button).

 

[JMB]

Is the button from the forms toolbar or the control toolbox? If Forms -
double check to make sure it is assigned to a macro. If control toolbox,
make sure you are not in design mode (check the control toolbox toolbar and
toggle the design button).

 

[Man Utd]

Hi,
I just figured out that my security level is high so the macro is disabled.