Your QuickBooks is not able to obtain an IP address, and server connections are also weak. Resolving QuickBooks error 12029 requires you to configure the internal security and firewall settings. Here are some other reasons that trigger error 12029.

• Unstable internet connection.
• The Internet Security or firewall is blocking the server connection.
• There could be a problem with your browser.
• The SSL settings are not proper.
• They could also be a possibility of network timeout.

These are some of the leading causes that result in error 12029. You can resolve them by taking some specific steps. Firstly, you will need to verify internet connectivity, which is the most prominent cause of error 12029. Now, configure your QuickBooks to use internet settings. The next step is to configure the SSL settings for Internet Explorer in QuickBooks. Launch application, click the Help menu, click internet connection settings, and ensure that your QuickBooks application uses the local internet network.