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NS_E_DRM_ATTRIBUTE_TOO_LONG
The state behind the HRESULT
NS_E_DRM_ATTRIBUTE_TOO_LONG belongs to the point where a WMDRM-ND attribute name or value exceeds the protocol/API limit. For NS_E_DRM_ATTRIBUTE_TOO_LONG, the owner is WMDRM for Network Devices; its working contract covers 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.
Before changing the machine, record attribute identifier and encoded byte length before serialization. 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_ATTRIBUTE_TOO_LONG from neighboring Windows Media errors.
State table
| Field | Value for NS_E_DRM_ATTRIBUTE_TOO_LONG |
|---|---|
| Policy input | requested action plus the exact license, certificate, profile, output or registration property evaluated by NS_E_DRM_ATTRIBUTE_TOO_LONG |
| Temporal state | trusted/system time, validity interval, request sequence and retry number when they influence NS_E_DRM_ATTRIBUTE_TOO_LONG |
| Lower result | the earliest store, network, cryptographic, driver or provider status preceding the final NS_E_DRM_ATTRIBUTE_TOO_LONG wrapper |
| Owner | operation, API/callback, object or session identifier, and component/device version associated with NS_E_DRM_ATTRIBUTE_TOO_LONG |
| Direct check | record attribute identifier and encoded byte length before serialization |
Build a useful incident record
A complete NS_E_DRM_ATTRIBUTE_TOO_LONG incident ties together device certificate and serial number, registration-database entry, approval flag, validation timestamp, network session, protocol message and transcrypt policy; the minimum correlation set for NS_E_DRM_ATTRIBUTE_TOO_LONG is the exact WMDRM-ND message type, device identifier, certificate chain, registration state, round-trip timing and the first protocol HRESULT.
That observation distinguishes this result from file corruption because a WMDRM-ND attribute name or value exceeds the protocol/API limit.
Reconstruct the decision
When documenting NS_E_DRM_ATTRIBUTE_TOO_LONG, state the rejected input and the expected successor state. The rejected input is demonstrated when you record attribute identifier and encoded byte length before serialization; the successor becomes reachable after you shorten or correctly encode that attribute within the supported limit. The NS_E_DRM_ATTRIBUTE_TOO_LONG model is suitable for a regression fixture because its expected state change is observable without weakening the DRM policy.
Interpretation limits
For NS_E_DRM_ATTRIBUTE_TOO_LONG, the established fact is that a WMDRM-ND attribute name or value exceeds the protocol/API limit. For NS_E_DRM_ATTRIBUTE_TOO_LONG, 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_ATTRIBUTE_TOO_LONG as the first specific result. The object and operation attached to NS_E_DRM_ATTRIBUTE_TOO_LONG are usually more diagnostic than a later cleanup or user-interface summary.
Focused verification
- Preserve
NS_E_DRM_ATTRIBUTE_TOO_LONGand0xC00D28B2before cleanup, fallback or another media item changes the context. - Compare the failure with a known-good case that changes only the property named by this condition: a WMDRM-ND attribute name or value exceeds the protocol/API limit.
- Apply the narrow correction for
NS_E_DRM_ATTRIBUTE_TOO_LONG: shorten or correctly encode that attribute within the supported limit. - Associate
NS_E_DRM_ATTRIBUTE_TOO_LONGwith its current WMDRM for Network Devices object and the requested action. - Run the direct check for
NS_E_DRM_ATTRIBUTE_TOO_LONG: record attribute identifier and encoded byte length before serialization. - Repeat the same action with the same content/device identity and verify that
NS_E_DRM_ATTRIBUTE_TOO_LONGis not replaced by another policy or trust failure.
Neighboring security decisions
| Result | Why it points elsewhere |
|---|---|
NS_E_DRM_BAD_REQUEST | a WMDRM-ND request has invalid framing, fields or message semantics |
NS_E_DRM_INVALID_CRL | the certificate revocation list used by WMDRM-ND is malformed, corrupt or unverifiable |
NS_E_DRM_EXPIRED_LICENSEBLOB | the license blob carried in the Cardea request has passed its validity interval |
Repair criterion
The next attempt becomes meaningful only after you shorten or correctly encode that attribute within the supported limit. For NS_E_DRM_ATTRIBUTE_TOO_LONG, 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_ATTRIBUTE_TOO_LONG; 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_ATTRIBUTE_TOO_LONG; that bypasses the decision instead of correcting its input. - Retain one failing artifact and one corrected artifact so the resolution of
NS_E_DRM_ATTRIBUTE_TOO_LONGcan be regression-tested.
Acceptance condition
For the final NS_E_DRM_ATTRIBUTE_TOO_LONG 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_ATTRIBUTE_TOO_LONG 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_ATTRIBUTE_TOO_LONG
- Windows Media DRM 10 for Network Devices — defines the platform objects used when diagnosing NS_E_DRM_ATTRIBUTE_TOO_LONG.
- Device registration — documents the protocol or API boundary behind NS_E_DRM_ATTRIBUTE_TOO_LONG.
- Using the WMDRM-ND protocol — provides the normative workflow relevant to NS_E_DRM_ATTRIBUTE_TOO_LONG.
- MS-DRMND protocol specification — lists the security and state transitions used to interpret NS_E_DRM_ATTRIBUTE_TOO_LONG.
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