QuickBooks Error Code 12029 is an error that occurs when your QuickBooks software is unable to connect to the internet. There are several reasons why this error might occur, including a faulty internet connection, incorrect firewall or antivirus settings, outdated QuickBooks software, and more. To fix this error, start by checking your internet connection and ensuring that it is stable and working correctly. Next, check your firewall and antivirus settings to make sure that QuickBooks is allowed to access the internet. You may also need to update your QuickBooks software to the latest version to resolve any compatibility issues. QuickBooks Error Support Helpline Number +1(855)-738-0359 and get instant solutions within no time possible