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NS_E_WMP_TAMPERED_CONTENT
Diagnosing NS_E_WMP_TAMPERED_CONTENT in the Windows Media Player playback path
NS_E_WMP_TAMPERED_CONTENT (0xC00D11C5) is returned when integrity or protected-content validation indicates that the media bytes or associated protection data have been altered.
Preserve the protected-content identity, integrity result, license state, and component that detected the mismatch. Re-downloading or replacing the asset may remove evidence needed to distinguish corruption from a trust-chain problem.
Controlled playback comparison
- Freeze the current object state and collect file hash, acquisition source, DRM header, signature/integrity result, storage errors and known-good copy hash.
- Reproduce this result once without automatic retries or fallback applications.
- Change only one precondition: compare with a newly acquired byte-identical or provider-verified copy without editing metadata.
- Compare the first nested status and next Player event with the failed run.
- After testing it, restore the original configuration if the change was diagnostic only.
Actions that obscure the cause
- using a hex editor to remove protection headers.
Technical references
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