How to solution QuickBooks Error 404 error message describes that the webpage or website you are attempting to find does not exist on the server. To resolve this error issue just refresh your system at least two times because a background processing of tasks will interrupt your current tasks and also check your internet connectivity.
Here are some common ways in which you might see the HTTP 404 error displayed:
404 Not Found
The requested URL [URL] was not found on this server
Error 404 Not Found
404 File or Directory Not Found
HTTP 404 Not Found
404 Page Not Found
404 Not Found error messages can appear in any browser or any operating system.