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QuickBooks Error 80029c4a signifies a DLL file corruption or missing component, hindering QuickBooks' functionality. Typically, it occurs due to antivirus interference or corrupted program files. Solutions involve updating QuickBooks, running the QB Diagnostic Tool, restoring the system to a prior working state, or performing a clean installation. Additionally, manually fixing Windows registry entries related to Error 80029c4a can help resolve the issue. Ensure to back up critical data before executing troubleshooting steps