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MF_E_INVALID_AKE_CHANNEL_PARAMETERS
MF_E_INVALID_AKE_CHANNEL_PARAMETERS is a DTCP channel-setup error. Media Foundation could not obtain the hostname and port needed for the Authentication and Key Exchange (AKE) endpoint from the DTCP parameters. The failure is therefore earlier than a cryptographic authentication result.
Validate the DTCP endpoint data before tracing authentication
- Record the content-protection system and the raw configuration object or property data from which the DTCP endpoint is built.
- Log the parsed host and numeric port separately; check for an empty host, a missing port, an invalid range, truncation, or a malformed serialized value.
- Keep endpoint parsing failures separate from DNS, TCP connection, and AKE protocol failures. Those later stages require a valid endpoint first.
DTCP is a link-protection technology and its AKE procedure authenticates compliant devices and establishes keying material. This HRESULT does not say that the remote device failed authentication; it says Media Foundation could not find usable channel coordinates in the parameters. Replacing an HDCP cable or renewing a media license will not repair malformed DTCP host/port data.
DTLA: DTCP overview · DTLA: DTCP informational specifications · Microsoft: Protected Media Path
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