QuickBooks error 15240 comes under update error and occurs when you try to update QB Desktop or download payroll update. It can appear anytime if you are using an outdated version of QuickBooks, you are not running the application as an Administrator, corrupted registry files, etc. Moreover, you are likely to face Update Error 15240 if QB is not able to install the latest update, payroll update gets failed and you are not able to perform payroll. Use the Clean Install Tool to fix this error efficiently. There are several other ways through which you can solve the issue easily. For more details, speak to our experts and get the most reliable solutions. Just dial our toll-free QuickBooks Error Technical Support 1-877-263-2742.