HRESULT 0xC00D28AA (NS_E_DRM_DEVICE_NOT

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Constant name:

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Description:

The device must be opened before it can be used to receive content.%0

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NS_E_DRM_INVALID_SESSION	NS_E_DRM_DEVICE_ALREADY_REGISTERED

NS_E_DRM_DEVICE_NOT_OPEN

Read the code before the dialog

The producer of 0xC00D28AA has determined that the application attempted protected transfer before opening the validated registered device. Diagnosis of NS_E_DRM_DEVICE_NOT_OPEN therefore starts in WMDRM for Network Devices, the layer responsible for the transmitter/receiver protocol that registers a network playback device, approves it, validates proximity, opens a protected session and transcrypts licensed content for that receiver.

Confirm the producer by doing one thing first: inspect the registered-device state immediately before transcrypt/send. The standard AllStat text is already shown above; this custom section concentrates on the object state and the evidence needed to separate NS_E_DRM_DEVICE_NOT_OPEN from neighboring Windows Media errors.

Correlate the owner and the policy

The object graph behind NS_E_DRM_DEVICE_NOT_OPEN includes device certificate and serial number, registration-database entry, approval flag, validation timestamp, network session, protocol message and transcrypt policy. A NS_E_DRM_DEVICE_NOT_OPEN trace should retain the exact WMDRM-ND message type, device identifier, certificate chain, registration state, round-trip timing and the first protocol HRESULT.

A later generic error must not replace this evidence: the original condition remains that the application attempted protected transfer before opening the validated registered device.

Why the first HRESULT matters

The transition that returns NS_E_DRM_DEVICE_NOT_OPEN begins with inspect the registered-device state immediately before transcrypt/send. If that observation matches, the next state cannot be reached until the implementation can call the supported open operation after registration, approval and validation. Keeping the NS_E_DRM_DEVICE_NOT_OPEN transition intact also shows whether a retry reused stale state or actually reevaluated the corrected input.

Minimum evidence set

Field	Value for `NS_E_DRM_DEVICE_NOT_OPEN`
Owner	operation, API/callback, object or session identifier, and component/device version associated with NS_E_DRM_DEVICE_NOT_OPEN
Direct check	inspect the registered-device state immediately before transcrypt/send
Policy input	requested action plus the exact license, certificate, profile, output or registration property evaluated by NS_E_DRM_DEVICE_NOT_OPEN
Temporal state	trusted/system time, validity interval, request sequence and retry number when they influence NS_E_DRM_DEVICE_NOT_OPEN
Lower result	the earliest store, network, cryptographic, driver or provider status preceding the final NS_E_DRM_DEVICE_NOT_OPEN wrapper

Contrast with related results

Result	Why it points elsewhere
`NS_E_DRM_INVALID_PROXIMITY_RESPONSE`	the receiver returned a proximity response that fails parsing or cryptographic verification
`NS_E_DRM_INVALID_SESSION`	the WMDRM-ND message refers to a nonexistent, expired or mismatched protocol session
`NS_E_DRM_DEVICE_ALREADY_REGISTERED`	registration attempts to create a duplicate record for the same device identity

The final dialog can be broader

For NS_E_DRM_DEVICE_NOT_OPEN, the established fact is that the application attempted protected transfer before opening the validated registered device. For NS_E_DRM_DEVICE_NOT_OPEN, that fact does not independently establish damaged media bytes, a missing decoder, a generally broken network, or invalid rights for every other action.

If the Player, encoder, setup program or device layer later emits a broader error, retain NS_E_DRM_DEVICE_NOT_OPEN as the first specific result. The object and operation attached to NS_E_DRM_DEVICE_NOT_OPEN are usually more diagnostic than a later cleanup or user-interface summary.

A controlled reproduction

Preserve NS_E_DRM_DEVICE_NOT_OPEN and 0xC00D28AA before cleanup, fallback or another media item changes the context.
Apply the narrow correction for NS_E_DRM_DEVICE_NOT_OPEN: call the supported open operation after registration, approval and validation.
Associate NS_E_DRM_DEVICE_NOT_OPEN with its current WMDRM for Network Devices object and the requested action.
Run the direct check for NS_E_DRM_DEVICE_NOT_OPEN: inspect the registered-device state immediately before transcrypt/send.
Compare the failure with a known-good case that changes only the property named by this condition: the application attempted protected transfer before opening the validated registered device.
Repeat the same action with the same content/device identity and verify that NS_E_DRM_DEVICE_NOT_OPEN is not replaced by another policy or trust failure.

Recovery at the right layer

Correct this layer directly and call the supported open operation after registration, approval and validation. For NS_E_DRM_DEVICE_NOT_OPEN, success means that the same requested action is accepted after that precise state change, not merely that another file or device happens to work.

While investigating NS_E_DRM_DEVICE_NOT_OPEN, keep this restriction: Do not delete the complete device-registration database before preserving the failing device record and certificate chain; that removes the distinction between registration, approval, validation and session failures.
Do not alter trusted time, revocation enforcement, certificate validation or output policy merely to suppress NS_E_DRM_DEVICE_NOT_OPEN; that bypasses the decision instead of correcting its input.
Retain one failing artifact and one corrected artifact so the resolution of NS_E_DRM_DEVICE_NOT_OPEN can be regression-tested.

Re-test the original case

For the final NS_E_DRM_DEVICE_NOT_OPEN test, keep the content KID or file hash, requested action, user/account, device identity and output route unchanged wherever they apply. The NS_E_DRM_DEVICE_NOT_OPEN case is resolved only when the operation completes without this HRESULT and without a substitute failure from a neighboring license, trust, session or policy check.

Technical references for `NS_E_DRM_DEVICE_NOT_OPEN`

Windows Media DRM 10 for Network Devices — provides the normative workflow relevant to NS_E_DRM_DEVICE_NOT_OPEN.
Device registration — lists the security and state transitions used to interpret NS_E_DRM_DEVICE_NOT_OPEN.
Using the WMDRM-ND protocol — defines the platform objects used when diagnosing NS_E_DRM_DEVICE_NOT_OPEN.
MS-DRMND protocol specification — documents the protocol or API boundary behind NS_E_DRM_DEVICE_NOT_OPEN.

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