When the QuickBooks Update program is broken, then you'll observe the QuickBooks Update Error 15106 message on your screen. the first reason behind this error message is your antivirus, otherwise you'll not have locked improperly using admin authentication. to unravel an update error 15106, you would like to log in using the admin rights, the restart the QuickBooks. Subsequent solution is to determine for the spy sweeper in your windows task manager. Click “Ctrl+Shift+Esc” and open the task manager then click the “Processes” tab and appearance for “sweeper.exe”. If you found the spy sweeper, then uninstall it from “Add or Remove Programs.” If you're unable to repair QuickBooks Update Error 15106, then you'll contact the QuickBooks expert for more help.