A Microsoft support technician goes to a firing range.
He shoots ten bullets at the target 50m away.
The supervisors check the target and see that there’s not even a single hit.
They shout to him that he missed completely.
The technician tells them to recheck, and gets the same answer.
The technician then aims the gun at his finger and shoots, blasting it off.
He shouts back, ‘It’s working fine here!
The problem must be at your end!’