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MQ_ERROR_PUBLIC_KEY_DOES_NOT_EXIST
MQ_ERROR_PUBLIC_KEY_DOES_NOT_EXIST: follow the state transition
For MQ_ERROR_PUBLIC_KEY_DOES_NOT_EXIST, the failed transition is: MSMQ cannot find the public key expected for the selected user or machine identity.
Capture before retry
capture identity/SID, certificate or MSMQ key store location, directory object, authentication operation, and key lookup result.
Prove the fix at the owning API
provision/restore the intended MSMQ public key through supported security setup, then repeat the authenticated operation. Keep unrelated inputs unchanged so a changed result has diagnostic value.
Technical references
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