Searching for the procedure to successfully get rid of error code 12002 in QuickBooks? The search ends right here. This article will talk about the information associated with QuickBooks error code 12002. And also, the steps that are to be performed to fix such an error. QuickBooks error code 12002is often seen when QuickBooks fails to use the internet connections for the PC. The user can end up in such an error when the software is unable to use the internet connection. Or if the software tried to update itself. This particular error is often seen with an error message that states “A network timeout that is preventing QuickBooks from accessing the server”.