The QuickBooks point of sale error 1330 usually indicates that the user has invalid data signature. This error is seen thanks to various reasons. This error code comes upon the screen with a mistake message stating “Invalid digital signature“. The error takes place when the user tries to re-install the purpose of sale version 7 on windows XP. it's usually considered as an unrecoverable error. For more details contact on this number -1-855-481-5338.Visit- https://accountingerrors.com/fix-quickbooks-error-1330/