QB Advisors LLC provides expert support to  How to QuickBooks Error 6123,0, which usually occurs while opening company files or during multi-user access. We ensure fast, secure, and reliable solutions to restore smooth functionality. If you encounter QuickBooks Error -6123, 0 while restoring a company backup file, follow the troubleshooting steps mentioned below. Choose the method that seems easiest for you, and we assure you that your issue will be resolved in no time.