CRYPT_XML_E_SIGN_FAILED

Code: 0x8009210C (2148081932)

As HRESULT:

S: 1 (Failure)
C: 0 (Microsoft-defined)
N: 0 (Not an NTSTATUS value)
Facility: 0x009 (FACILITY_SECURITY: Security API)
Code: 0x210c (8460)

As NTSTATUS:

Sev: 2 (STATUS_SEVERITY_WARNING)
C: 0 (Microsoft-defined)
Facility: 0x009 (FACILITY_NTSSPI: Security Support Provider Interface (SSPI))
Code: 0x210c (8460)

Documented in Win32

CryptXML Error Codes (cryptxml.h): 0x8009210C

The cryptographic signature operation failed.