The QuickBooks update error 404 arises if QuickBooks software is not installed successfully. Alternatively, if something is infected, destroyed, or corrupted in your QuickBooks database, this error notice appears on the desktop. Lastly, this will either completely shut down or start up Windows. A user receives an error code 404 during the installation of QuickBooks software on a computer. We propose that they should learn how to troubleshoot the problem.