SHC_NEGOTIATE_RESULT Return Value - rc

rc (ULONG)

Return codes indicating success or the type of failure:

NO_ERROR

Success.
ERROR_INVALID_FUNCTION
Invalid function requested.
ERROR_INVALID_STREAM
Invalid stream handle.
ERROR_INVALID_HID
Invalid handler ID.
ERROR_INVALID_PROTOCOL
There was an SPCB negotiation failure. ulErrorStatus points to the field of the SPCB that failed the negotiation. The fields of the SPCB are numbered, starting with 1.
FAILURE
Stream handler-specific error return code.

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