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NS_E_DRM_PD_TOO_MANY_DEVICES
Failure scope
For NS_E_DRM_PD_TOO_MANY_DEVICES, the failed contract is that portable-media registration data already contains the maximum supported target-device set. Within Windows Media DRM client internals, this result is raised while processing the client DRM engine that initializes security components, validates content and license identifiers, performs individualization, manages license chains and coordinates protected playback capabilities.
The strongest confirmation is to enumerate registered devices and last-validation times before deleting any entry.
Test without erasing evidence
- Preserve this result and
0xC00D2842before cleanup, fallback or another media item changes the context. - Associate this result with its current Windows Media DRM client internals object and the requested action.
- Run the direct check for it: enumerate registered devices and last-validation times before deleting any entry.
- Compare the failure with a known-good case that changes only the property named by this condition: portable-media registration data already contains the maximum supported target-device set.
- Apply the narrow correction for it: remove obsolete registrations through the supported management interface.
- Repeat the same action with the same content/device identity and verify that it is not replaced by another policy or trust failure.
Data worth retaining
The important objects are DRM component version, KID, content header signature, license chain, uplink license, individualization state, portable-device registrations and local configuration. Evidence for it should correlate the KID and header hash, DRM component version, individualization status, license-chain identifiers, registry/configuration lookup and the first client callback reporting failure.
That observation distinguishes it from file corruption because portable-media registration data already contains the maximum supported target-device set.
The transition to retest
The transition that returns it begins with enumerate registered devices and last-validation times before deleting any entry. If that observation matches, the next state cannot be reached until the implementation can remove obsolete registrations through the supported management interface. Use a known-good counterpart only as a control; do not replace the failing artifact before its identifiers and hashes are recorded.
Verification inputs
| Field | Value |
|---|---|
| Owner | operation, API/callback, object or session identifier, and component/device version associated with it |
| Direct check | enumerate registered devices and last-validation times before deleting any entry |
| Policy input | requested action plus the exact license, certificate, profile, output or registration property evaluated by it |
| Temporal state | trusted/system time, validity interval, request sequence and retry number when they influence it |
| Lower result | the earliest store, network, cryptographic, driver or provider status preceding the final it wrapper |
Different owners, similar dialog
| Result | Why it points elsewhere |
|---|---|
NS_E_DRM_LICENSE_SERVER_INFO_MISSING | the client cannot read configuration that identifies or describes the license service |
NS_E_DRM_BUSY | another process or operation holds the DRM subsystem lock |
NS_E_DRM_INDIV_FRAUD | the individualization service rate-limited further security upgrades for this client/day |
Separate cause from wrapper
The established fact is that portable-media registration data already contains the maximum supported target-device set. 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 it as the first specific result. The object and operation attached to it are usually more diagnostic than a later cleanup or user-interface summary.
When a retry is valid
A matching correction is to remove obsolete registrations through the supported management interface. Success means that the same requested action is accepted after that precise state change, not merely that another file or device happens to work.
- Evidence for it is easy to destroy; Do not replace DRM binaries or registry state before recording their versions and signatures; otherwise a component mismatch and a damaged license object become indistinguishable.
- Do not alter trusted time, revocation enforcement, certificate validation or output policy merely to suppress it; that bypasses the decision instead of correcting its input.
- Retain one failing artifact and one corrected artifact so the resolution of it can be regression-tested.
Final verification
For the final it test, keep the content KID or file hash, requested action, user/account, device identity and output route unchanged wherever they apply.
Technical references
- Windows Media DRM client interfaces — documents the protocol or API boundary behind it.
- Digital Rights Management features — provides the normative workflow relevant to it.
- Licenses and the local license store — lists the security and state transitions used to interpret it.
- Windows Media Format SDK error codes — defines the platform objects used when diagnosing it.
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