Users usually see QuickBooks Error 40001 when attempting to utilize direct deposit services or adjust payroll. Incorrect login information, out-of-date software, or problems with the QuickBooks Desktop application are frequently the causes. Verifying your Intuit account and making sure your QuickBooks is up to date are typically necessary steps in fixing the mistake. To speak with a friendly, knowledgeable QuickBooks phone support specialist, call 1.855.738.2784.