The error 15270 of QuickBooks occur when users are attempting to download the payroll update or setup file. There can be various reasons why this error can haunt you: wrong UAC settings, inactive and incorrect subscription details, etc. This error code is one of the critical mistakes which can give its users a tough time as and when it occurs. One should remove this error immediately for preventing loss of data and also to continue working on the company file by reaching out to QuickBooks customer service . The experts have the knowledge and experience of fixing this issue in the minimum time frame. What are the reasons for QuickBooks Error 15270 to occur? The underlying cause due to which QuickBooks Error 15270 occurs are listed below: Incomplete downloading of the files When your computer fails to download the QuickBooks update file entirely either due to poor internet connection, lack of memory and untimely termination of the process. Flaws in User Account Settings