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MCMADM_E_REGKEY_NOT_FOUND
MCMADM_E_REGKEY_NOT_FOUND — 0xC00D006A
Diagnosing MCMADM_E_REGKEY_NOT_FOUND
MCMADM_E_REGKEY_NOT_FOUND means that the Windows Media Services administration path expected a registry key that was not present in the registry view used by the failing process. Treat the missing key as the primary evidence: a later generic administration or COM error does not identify which configuration lookup failed.
Evidence to collect before changing configuration
| Field | What to preserve |
|---|---|
| Registry target | The exact hive and subkey requested by the failing component, plus the value name if the operation was reading a value beneath that key. |
| Process context | The Windows Media Services process or administration tool, its account, and whether it is a 32-bit or 64-bit process when registry redirection can select a different view. |
| Lookup result | The first registry/Win32 result from the failed open or query, before it is mapped to this HRESULT. |
| Configuration source | The server role, plug-in, publishing-point setting, or installation step that is expected to create or populate the missing key. |
Focused test
Trace or reproduce the same registry lookup from the same process context. Confirm whether the key is truly absent, exists only in another registry view, or exists under a different server/component identity. A manual search in Registry Editor is not sufficient if it is performed under a different view or security context.
Corrective direction
Restore the configuration through the component or setup path that owns the key whenever possible. Do not create an arbitrary empty key merely to make the lookup succeed: required values, ACLs, or component registration can still be missing and the next operation may fail at a less specific boundary.
Verification
Repeat the exact administrative or API operation that produced MCMADM_E_REGKEY_NOT_FOUND. The repair is demonstrated when the same process can open the intended key and complete the original operation; if the registry lookup succeeds but another HRESULT appears, preserve that new result separately.
Technical references
- Windows Media Services 9 Series SDK
- Registry key security and access rights
- Accessing an alternate registry view
- Microsoft HRESULT values for the Windows Media namespace
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