Fixing QuickBooks Desktop Error - 6123, 0. While Upgrading Company File QuickBooks is a fully featured powerful financial accounting tool from Intuit which is fully equipped to record and process financial accounting transaction. QuickBooks also helps preparing financial accounting statements. QuickBooks data is saved in highly secure and encrypted form of database and requires updates and upgrades as the QuickBooks software gets updated or upgraded to a newer version. Users may face QuickBooks Desktop Error - 6123, 0 while updating or upgrading the company file or while restoring backup of company file from network location. When the error occurs the database is not updated upto the new configuration of the software and endup damaging company file. What causes QuickBooks Desktop Error - 6123, 0? When the user updates or upgrades QuickBooks company file after updating/ upgrading QuickBooks Software then the user may face error 6123, 0. Following are the situations when the Error is most likely generated. • Restoring Company file present in network drive or External drive • Intermittent network connection while updation/ upgradation of company file • QuickBooks Company file to be restored is damaged • Malware or malicious software affecting Upgrade process of company file • Firewall settings interrupting QuickBooks wile opening Company file • Windows system files are damagedAll Rights Reserved