QuickBooks is a highly sought-after application for day-to-day accounting solutions by industry leaders, but it also crashes into issues such as error code 40001. You will come across this error while updating direct deposits or payrolls.
We have covered all the major methods to troubleshoot QuickBooks error code 40001 and the related causes. You can follow these steps easily and fix such errors on your own.
Source: https://www.axpertadvisors.com/quickbooks-error-40001/