QuickBooks Error 15243 usually pops up while updating QuickBooks desktop. The error appears on the screen with a message, “Error 15243: The update of payroll is not able to complete successfully. The QuickBooks FCS service is damaged.” Inactive QuickBooks payroll subscription is the primary reason behind the error. We suggest repairing QuickBooks and running the Quick Fix my Program tool to fix the issue. If you are fed up with QuickBooks error message code 15243 and want an instant solution for it, then contact certified QuickBooks professionals by dialling our helpline number 1.855.738.2784.