QuickBooks Error 15271 is a common update error that occurs when downloading a payroll update or QuickBooks Desktop update. The error message typically states, “The payroll update did not complete successfully” or “The update did not complete successfully.” This error can be caused by a variety of issues, including incomplete installation, corrupt files, or interference from antivirus software. To resolve this issue, contact QuickBooks support at 1.855.738.2784 for expert assistance.