The QuickBooks error 80029c4a is a runtime error that shows up when you attempt to access your company file. It finds itself in the most commonly encountered technical errors in QuickBooks Desktop. There are several causes and walkways to troubleshoot this error code. This error usually pops up when you install a corrupted version of QuickBooks Desktop in your system. However, several other causes may incite the QuickBooks error code 80029c4a in QuickBooks.