Hello. I'm Alex Poter, and I'm here to help you with your IT problems. Many Norton customers want to know how to repair the 'QuickBooks Error 1904' problem. Working as an Administrator, hit "Ctrl+Alt+Delete" on the keyboard simultaneously. Choose "Switch User Windows 8 users" by pressing the "Windows" button and selecting the user icon. At a time, press "Ctrl+Alt+Delete.".