What does HRESULT 0xC00DB3B2 (MF_E_MEDIA_EXTENSION_PACKAGE_INTEGRITY_CHECK_FAILED) mean?

MF_E_MEDIA_EXTENSION_PACKAGE_INTEGRITY_CHECK_FAILED

MF_E_MEDIA_EXTENSION_PACKAGE_INTEGRITY_CHECK_FAILED indicates a package-integrity problem on the media-extension provider side. This is different from a decoder rejecting media bytes: the packaged component that provides the extension could not be accepted as an intact package.

Inspect package state and deployment health

• Check the extension package's Package.Status and record Modified, Tampered, and NeedsRemediation.
• Compare the installed package version and identity with the extension version expected by the application.
• Use the Windows package deployment logs and the Store or deployment channel that installed the package; do not replace individual DLLs inside the installed package.

Windows package integrity can validate package contents and trigger remediation when files are corrupt or tampered with. Microsoft also documents that signed MSIX content is chained through package block-map and signature data for integrity validation. Reinstalling a codec binary manually is therefore not equivalent to repairing the package. The relevant recovery path is package repair, reset, update, or reinstall through the package's deployment source after preserving the original failure details.

Microsoft: PackageStatus · Microsoft: package integrity checks · Microsoft: MSIX signing and integrity

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