80029C4A | Error loading type library

What This Code Means

Where Users Usually See This Code

• Application launch errors
• Post-update startup failures
• Business apps that rely on Windows components (COM/.NET/VC runtimes)

Why This Code Appears

• A required component was removed or corrupted
• Version mismatch after updates or partial installs
• Registration for a dependency is broken
• Security software blocked or quarantined a dependency

What Typically Happens Next

• The application fails to start or a module fails to load
• Repair or reinstall is often required to restore dependencies

What This Code Is Not

• It is not a payment processing decline code
• It is not a user credential/authentication error by itself

Troubleshooting Checklist

• □ Restart and retry to rule out transient locks
• □ Run the application’s official repair tool (if available)
• □ Ensure Windows updates and required runtimes are installed
• □ Check security software logs/quarantine for blocked DLLs
• □ If the issue started after an update, re-run the installer to restore missing components

Notes And Edge Cases