Although QuickBooks does not show the QuickBookserror 404 too often but then if you face this problem it is easy to fix. All you need to do is uninstall and then reinstall the software. Here is how you can do it: 

• Click on the start button and open the programs and features of the desktop.
• Click on the control panels and then click on the uninstall button that you see on the screen after clicking on the icon of the software.
• After you have done this, the uninstalling process will take place and all the files related to this software will be erased.
• Now locate QuickBooks error 404 and then reinstall the software.
• Now re-download the software and this problem will be fixed.

QuickBooks Error 404 occurs when you try to access a webpage or a file but it cannot be found. This error is usually caused by various factors, such as a damaged or incomplete installation of QuickBooks, a network connectivity issue, or a problem with the Intuit server. Here are some steps you can take to resolve QuickBooks Error 404:

Refresh the page: Sometimes, the error occurs due to a temporary issue. Try refreshing the webpage or pressing the F5 key on your keyboard to reload the page. If the error persists, proceed to the next steps.

Check your internet connection: Make sure you have a stable and reliable internet connection. Try accessing other websites to ensure your internet is working properly. If you have a slow or intermittent connection, contact your internet service provider for assistance.

Update and repair QuickBooks: Ensure that you have the latest updates installed for QuickBooks. Go to the Help menu in QuickBooks and select Update QuickBooks. After the update, restart QuickBooks and check if the error persists. If the error continues, you can try repairing the QuickBooks installation. Go to the Control Panel, select Programs or Programs and Features, find QuickBooks in the list, and choose the option to repair the installation.