There are several update errors that QuickBooks Desktop encounters and the most common ones are payroll update errors. One such payroll update error is QuickBooks error 15101 that can appear because of several different reasons. If you are also a QuickBooks user dealing with such an error in the application, then you can try resetting internet settings on your PC for a fix. If this did not help you resolve the issue, then you can reach QuickBooks Desktop experts at 1-855-856-0042 for quick help and support.