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MQ_ERROR_CANNOT_CREATE_HASH_EX
MQ_ERROR_CANNOT_CREATE_HASH_EX: MSMQ could not create the hash object required for authenticated messaging
MQ_ERROR_CANNOT_CREATE_HASH_EX (0xC00E0081) identifies a specific boundary: MSMQ could not create the hash object required for authenticated messaging. Keep it separate from neighboring errors that may occur in the same product but represent a different lookup, state, trust, or transport decision.
Evidence to capture
Record message ID, authentication settings, selected hash algorithm/provider, cryptographic context, and the first provider error. The failure occurs before message authentication can be completed.
Corrective test
Restore a supported hashing provider/algorithm for the MSMQ process and verify one controlled authenticated message can create its hash and proceed to signing. Preserve the original identifiers while testing; if another HRESULT appears after this boundary is fixed, treat that value as the next-stage result.
Technical references
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