The QuickBooks Error 80029c4a is a software issue, not a system issue. It usually occurs when QuickBooks is unable to access an important file that it needs to run. This error can be caused by several different issues, including a damaged or out-of-date installation of QuickBooks, a damaged or missing QuickBooks file, or a damaged or missing Windows registry key. 

To resolve this issue, it is recommended to try the following solutions:

1. Repair the QuickBooks installation.

2. Restore the missing or damaged QuickBooks files.

3. Repair the Windows registry.

4. Uninstall and reinstall QuickBooks.

If none of these solutions work, contact a certified QuickBooks ProAdvisor at 

+1.855.738.0359 for further assistance.