I can help you resolve the error 12029 to download payroll of QuickBooks Desktop (QBDT) update, @DMH.
You'll encounter error 12029 is caused by misconfigured browser and security settings, or an application such as an antivirus or firewall program is preventing the update from taking effect.
You can resolve this by connectivity and setup testing. Refer to the following information:
- Download and install the QuickBooks Tool Hub, then run the TLS 1.2 Readiness tool. This will update your operating system to be compliant. See this article for detailed guidance: TLS 1.2 for QuickBooks Desktop for Windows.
- Verify if you've set Internet Explorer as your default web browser. Check out this article for more information on how to do it: Set Internet Explorer to be your default browser.
- Check that you can visit secure websites outside of QuickBooks Desktop, such as your financial institution's sign-in page.
Visit this reference for more information about the error you're having and resolving it: Get help with errors 12002, 12007, 12009, 12029, and 12031 when updating.
If none of the above solutions work, try downloading and installing the latest updates or installing and uninstalling QBDT in selective startup mode. It'll be certain that no other application restricts you from completing your task. Refer to these articles:
Let me know if you need further help with resolving the error you're having. I'm always glad to help in any way I can. Have a great rest of the day!
