HRESULT 0xC00D28A8 (NS_E_DRM_INVALID_PROXIMITY

Status / error code:

Category:

Constant name:

Source:

Facility:

Operating System:

Description:

The response to the proximity detection challenge is invalid.%0

Previous	Next
NS_E_DRM_MUST_REVALIDATE	NS_E_DRM_INVALID_SESSION

NS_E_DRM_INVALID_PROXIMITY_RESPONSE

What the caller learned

Read NS_E_DRM_INVALID_PROXIMITY_RESPONSE at the object boundary, where the receiver returned a proximity response that fails parsing or cryptographic verification. NS_E_DRM_INVALID_PROXIMITY_RESPONSE comes from WMDRM for Network Devices, whose state machine implements 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: preserve challenge, response, nonce/session association and signature result. 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_INVALID_PROXIMITY_RESPONSE from neighboring Windows Media errors.

Narrow the failure

Preserve NS_E_DRM_INVALID_PROXIMITY_RESPONSE and 0xC00D28A8 before cleanup, fallback or another media item changes the context.
Associate NS_E_DRM_INVALID_PROXIMITY_RESPONSE with its current WMDRM for Network Devices object and the requested action.
Run the direct check for NS_E_DRM_INVALID_PROXIMITY_RESPONSE: preserve challenge, response, nonce/session association and signature result.
Compare the failure with a known-good case that changes only the property named by this condition: the receiver returned a proximity response that fails parsing or cryptographic verification.
Apply the narrow correction for NS_E_DRM_INVALID_PROXIMITY_RESPONSE: fix receiver protocol/firmware or session correlation, then restart validation.
Repeat the same action with the same content/device identity and verify that NS_E_DRM_INVALID_PROXIMITY_RESPONSE is not replaced by another policy or trust failure.

State that must remain correlated

The security decision represented by NS_E_DRM_INVALID_PROXIMITY_RESPONSE depends on device certificate and serial number, registration-database entry, approval flag, validation timestamp, network session, protocol message and transcrypt policy. Record the exact WMDRM-ND message type, device identifier, certificate chain, registration state, round-trip timing and the first protocol HRESULT from the same NS_E_DRM_INVALID_PROXIMITY_RESPONSE attempt.

That observation distinguishes this result from file corruption because the receiver returned a proximity response that fails parsing or cryptographic verification.

State transition

The before/after comparison for NS_E_DRM_INVALID_PROXIMITY_RESPONSE has one controlled variable. Before correction, the receiver returned a proximity response that fails parsing or cryptographic verification; after correction, the same workflow can fix receiver protocol/firmware or session correlation, then restart validation. The NS_E_DRM_INVALID_PROXIMITY_RESPONSE comparison should preserve content and device identity so success cannot be attributed to testing a different asset.

Capture before retry

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

Similar symptoms are not identical

Result	Why it points elsewhere
`NS_E_DRM_MUST_APPROVE`	the receiver is registered but lacks the user approval required before content transfer
`NS_E_DRM_MUST_REVALIDATE`	the receiver registration exists but its proximity validation is stale or no longer acceptable
`NS_E_DRM_INVALID_SESSION`	the WMDRM-ND message refers to a nonexistent, expired or mismatched protocol session

Do not overread the HRESULT

For NS_E_DRM_INVALID_PROXIMITY_RESPONSE, the established fact is that the receiver returned a proximity response that fails parsing or cryptographic verification. For NS_E_DRM_INVALID_PROXIMITY_RESPONSE, 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_INVALID_PROXIMITY_RESPONSE as the first specific result. The object and operation attached to NS_E_DRM_INVALID_PROXIMITY_RESPONSE are usually more diagnostic than a later cleanup or user-interface summary.

A real fix

Correct this layer directly and fix receiver protocol/firmware or session correlation, then restart validation. For NS_E_DRM_INVALID_PROXIMITY_RESPONSE, success means that the same requested action is accepted after that precise state change, not merely that another file or device happens to work.

A broad reset is not the first step for NS_E_DRM_INVALID_PROXIMITY_RESPONSE; 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_INVALID_PROXIMITY_RESPONSE; that bypasses the decision instead of correcting its input.
Retain one failing artifact and one corrected artifact so the resolution of NS_E_DRM_INVALID_PROXIMITY_RESPONSE can be regression-tested.

Evidence that the repair holds

For the final NS_E_DRM_INVALID_PROXIMITY_RESPONSE 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_INVALID_PROXIMITY_RESPONSE 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_INVALID_PROXIMITY_RESPONSE`

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

Looking for a different code? Search another status or error code.