Should the user be able to press disabled buttons on a touch screen?

I'm designing a touchscreen app and there are certain scenarios when the server cannot be reached, a printer is disabled, etc. that will disable a button (like the print button).

My question is: if the button is disabled, should the user be able to select it?

For instance, would it be beneficiary to trigger an overlay with more information as to why the button is disabled when the user selected the disabled button?