SHC_INSTALL_PROTOCOL Return Value - rc

rc (ULONG)

Return codes indicating success or the type of failure:

NO_ERROR

Success.
ERROR_INVALID_SPCBKEY
Invalid spcbkey.
ERROR_INVALID_PROTOCOL
Invalid stream protocol control block.
ERROR_ALLOC_RESOURCES
Out of memory or some other resource.
FAILURE
Stream handler-specific error return code.

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