Suddenly interrupted by QuickBooks error 15242, when updating payroll? Well, this is definitely fixable. QuickBooks error 15242 is actually a payroll update error that is accompanied by a warning message: The payroll update did not finish successfully. QuickBooks FCS is damaged or unresponsive. This warning message alerts the QuickBooks user about damaged File copy service. To help you understand QuickBooks error 15242 better, here are the actual reasons why this error appears and also the steps that you can incorporate to get rid of the error.