80029C4A | Error loading type library

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Systems & Devices

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/systems/business-systems/error-codes/80029c4a/

Last Updated

Feb 27, 2026

Summary

A Windows component or program dependency failed to load a required type library, often during application start.

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What This Code Means

80029C4A is commonly surfaced by Windows applications when a required COM/ActiveX type library cannot be loaded. In business software, it frequently appears after an update, repair, or system change that leaves a dependency unregistered, missing, or mismatched.

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

This code can be emitted by many Windows programs; always correlate with the application name and the failing module.

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