The message QuickBooks Payroll Error 40003 denotes a problem with connectivity between QuickBooks' server and software, which is impeding payroll processing or changes. The most common causes of this error are network issues, improper system configurations, or server maintenance. To resolve the issue, try checking your internet connection, double-checking your settings, or waiting for a server to become available. For assistance with QuickBooks, give our team of specialists a call at 1.855.409.2300.
Read more :https://techcommunity.microsoft.com/t5/windows-10/how-fix-quickbooks-payroll-error-code-40003-after-update-windows/m-p/4128188