What causes QuickBooks Error 403? QuickBooks error code 403 is typically caused by: Incorrect configuration of LAN settings on your system. The user may encounter QuickBooks error 403 at the time of downloading or updating the software to a replacement release by Intuit. QuickBooks error 403 takes place when a user tries to download or install the newest update for QuickBooks payroll service. For more info contact now +1-844-827-3817.