QuickBooks error 15311 an error code related to 15XXX series that can stop you from downloading payroll updates or updating the software. You will receive the following error messages on your screen accompanying this same error code. “QuickBooks update cannot be completed successfully” or “Cannot connect to QuickBooks payroll”. When the error takes place, it crashes an active window, and the update process gets obstructed. The undesired technical error while updating QuickBooks payroll can occur due to several reasons. In this post, we have covered the main aspects of QuickBooks Desktop error 15311, such as causes, symptoms, and troubleshooting.