Användaren avbryter installationen returnerar kod -1
AI_NO_ERORR (0) - returned when a command is executed successfully
AI_ERROR_EXCEPTION (0xE0010064) - returned when an exception occurs and no other error code is specified
AI_ERROR_BAD_IDENTIFIER (0xE0010065) - invalid MSI identifier
AI_ERROR_DUPLICATED_SEARCH_SIGNATURE (0xE0010066) - duplicated search signature
AI_ERROR_SEARCH_NOT_FOUND (0xE0010067) - search signature was not found
AI_ERROR_FILE_NOT_FOUND (0xE0010068) - file is missing
AI_ERROR_MALFORMED_COMMAND_LINE (0xE0010069) - command line is invalid
AI_ERROR_UNSUPPORTED_CMD_FILE_FORMAT (0xE001006A) - command file format is invalid (possible unsupported encoding)