CRYPT_XML_E_INVALID_KEYVALUE

Code: 0x8009210F (2148081935)

As HRESULT:

S: 1 (Failure)
C: 0 (Microsoft-defined)
N: 0 (Not an NTSTATUS value)
Facility: 0x009 (FACILITY_SECURITY: Security API)
Code: 0x210f (8463)

As NTSTATUS:

Sev: 2 (STATUS_SEVERITY_WARNING)
C: 0 (Microsoft-defined)
Facility: 0x009 (FACILITY_NTSSPI: Security Support Provider Interface (SSPI))
Code: 0x210f (8463)

Documented in Win32

CryptXML Error Codes (cryptxml.h): 0x8009210F

The key value that was supplied is not valid.