In QuickBooks Desktop software, while opening the company files, the users have to give the start date which shows the starting point of the transactions. If however, for some reasons, the starting date is given wrong or you need to change the starting date, the account balance prior to that date becomes the opening balance. For any issues, call QuickBooks Technical Support Toll-free number ✆+1-800-796-0471. We are just a phone call away. We are available 24/7.