QuickBooks Payroll service allows users to run payrolls and e-file federal and state taxes with ease and is considered as the most cost-effective ways to pay employees. A common error that user encounters while updating payroll is QuickBooks error 15243 that evolves when QuickBooks File Copy Service (FCS) stops working due to some reasons. Once you get this error, you will see an error message on the screen “Error 15243 – The update of payroll is not able to complete successfully. The QuickBooks FCS service is damaged”. To resolve this error, you need to follow multiple troubleshooting steps that we have mentioned further in our article.