QuickBooks Error 12029 happens when the program is unable to establish a connection to the internet, which is frequently caused by network, firewall, or antivirus problems.  Updates may be blocked and internet services may be interrupted by this problem. It can be fixed by modifying firewall permissions, reviewing internet settings, and making sure QuickBooks has the right access to run smoothly. For professional assistance and advice with QuickBooks, call 1.855.738.2784.