QuickBooks not responding is a frequent problem that arises when the program freezes or ceases functioning, frequently as a result of malfunctioning files, system overload, or out-of-date software. Running the QuickBooks Tool Hub, updating QuickBooks, or restarting the computer can all help fix issues and get things back to normal. For knowledgeable QuickBooks support over the phone, dial 1.855.738.2784.