The most prominent reason that leads to QuickBooks error code 6190 is the transaction log file does not match with the company file or there could be an update failure while updating QuickBooks. In order to resolve QuickBooks error – 6190, you will need to first update your QuickBooks to the latest version. Here are the steps that you can follow. Firstly close your company file and close QuickBooks. Run QuickBooks as an administrator, click the help menu, and click update QuickBooks. Now go to the options tab, checkmark all the options, and click save. Now click the update now tab, checkmark reset update, and click the get updates button. Once done, the error 6190 should resolve.