How can I sort out QuickBooks Update Error 404?

In order to resolve QuickBooks Update Error 404, here are the steps to take. Change your Internet settings first. Now pick the Security tab from the drop-down menu under Internet Explorer's Tools >> Internet Options menu. Further, select Quickbooks.com and Intuit.com to be added to the list of trusted sites under Trusted Sites.

Additionally, click Close >> Ok before logging out of the company file and closing QuickBooks. Finally, restart QuickBooks, open the company file, and finish the operation that resulted in QB Error 404.