I worked in Field Service, I T, Sys Admin. for 30 years and as many have said this happens all the time. It never made me feel good about the fix, but what can you do its working now, one time I told the customer I scared the sh#t out of it, he bought it.
Dana.....

I say that too when asked "why didn't it do that when I pressed the button"

because it is scared of me-