If you are getting QuickBooks error 6123 on your system, then it means that it has occurred because of the updating company files to the latest version of QuickBooks Desktop. Also, you may face this error in case you are working on the company file. There could be many possible reasons for this error so first let's try to know its causes and then reach the solutions. <b>Causes of QuickBooks Error 6123</b> 1. Maybe, QuickBooks error 6123 occurred due to restoring a company file from an external storage device. 2. Possibly, disrupted network connection from the host server could be the reason of the error occurrence. 3. It might be arising due to the damaged QuickBooks company data file. 4. The software's error may be taking place due to the McAfee antivirus service installed on the PC. 5. There are chances that the error has occurred because of the damaged QBW files. 6. In case your window user is damage, you might receive this error. Solutions to Troubleshoot QuickBooks Error Code 6123 Use the QuickBooks Tools Hub 1. Initially, you need to close the QuickBooks application. 2. Now, you have to download the QuickBooks Tool hub and then save it on your system. 3. You need to open the downloaded file. 4. You have to follow the on-going prompts for accepting the terms and conditions. 5. Finally, double click on the icon and then open the tool hub. Run Quick Fix my Program 1. Firstly, you need to go to the QuickBooks Tool Hub. 2. Now, click on the program problems. 3. You have to click on Quick Fix my Program. 4. You need to wait some time to access the tool. 5. Lastly, you have to open the QuickBooks application. Delete Special Characters from the file name You need to check that the file name should not be more than 30 characters. Apart from this, also see that the company file doesn't contain any special characters or spaces. For more info visit: https://qbdesktopsupport.com/quickbooks-error-6123/