In order to get rid of the QuickBooks error 404, users can carry out the below stated methods. The QuickBooks error code 404 is a very common error that might end up in various other issues. This error can be seen due to various factors, which includes if the software is not installed properly or something gets infected, deleted to corrupt files in your QuickBooks database. This error message might show up on the screen, and it might close the Windows as completely shut down or starts up.