diff -urpN memdbg3/src/john.c memdbg2/src/john.c
--- memdbg3/src/john.c	2013-05-01 08:35:13.859375000 -0500
+++ memdbg2/src/john.c	2013-05-01 08:11:42.187500000 -0500
@@ -13,7 +13,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <sys/stat.h>
-#ifndef __DJGPP__
+#if !defined (__DJGPP__) && !defined (_MSC_VER)
 #include <sys/wait.h>
 #endif
 
@@ -500,7 +500,7 @@ static void john_omp_init(void)
 
 static void john_fork(void)
 {
-#ifdef __DJGPP__
+#if defined (__DJGPP__) || defined (_MSC_VER)
 	fputs("Warning: --fork is not supported in this build, "
 	    "will run one process\n", stderr);
 #else
@@ -553,7 +553,7 @@ static void john_fork(void)
 
 static void john_wait(void)
 {
-#ifndef __DJGPP__
+#if !defined __DJGPP__ && !defined (_MSC_VER)
 	int waiting_for = john_child_count;
 
 	log_event("Waiting for %d child%s to terminate",
diff -urpN memdbg3/src/options.c memdbg2/src/options.c
--- memdbg3/src/options.c	2013-05-01 08:35:15.703125000 -0500
+++ memdbg2/src/options.c	2013-05-01 08:22:48.281250000 -0500
@@ -108,9 +108,11 @@ static struct opt_entry opt_list[] = {
 		"%u", &mem_saving_level},
 	{"node", FLG_NODE, FLG_NODE, FLG_CRACKING_CHK, OPT_REQ_PARAM,
 		OPT_FMT_STR_ALLOC, &options.node_str},
+#if !defined (_MSC_VER) && !defined (__DJGPP__)
 	{"fork", FLG_FORK, FLG_FORK,
 		FLG_CRACKING_CHK, FLG_STDIN_CHK | FLG_STDOUT | FLG_PIPE_CHK | OPT_REQ_PARAM,
 		"%u", &options.fork},
+#endif
 	{"pot", FLG_NONE, FLG_NONE, 0, OPT_REQ_PARAM,
 	    OPT_FMT_STR_ALLOC, &options.loader.activepot},
 	{"format", FLG_FORMAT, FLG_FORMAT,
@@ -179,6 +181,12 @@ static struct opt_entry opt_list[] = {
 #include "john_build_rule.h"
 #endif
 
+#if !defined (_MSC_VER) && !defined (__DJGPP__)
+#define FORK_MSG_STRING "--fork=N                  fork N processes\n"
+#else
+#define FORK_MSG_STRING ""
+#endif
+
 #define JOHN_USAGE \
 "John the Ripper password cracker, version " JOHN_VERSION _MP_VERSION " [" JOHN_BLD "]\n" \
 "Copyright (c) 1996-2013 by " JOHN_COPYRIGHT "\n" \
@@ -209,7 +217,7 @@ static struct opt_entry opt_list[] = {
 "--salts=[-]COUNT[:MAX]    load salts with[out] COUNT [to MAX] hashes\n" \
 "--save-memory=LEVEL       enable memory saving, at LEVEL 1..3\n" \
 "--node=MIN[-MAX]/TOTAL    this node's number range out of TOTAL count\n" \
-"--fork=N                  fork N processes\n" \
+FORK_MSG_STRING \
 "--pot=NAME                pot file to use\n" \
 "--list=WHAT               list capabilities, see --list=help or doc/OPTIONS\n"
 
diff -urpN memdbg3/src/signals.c memdbg2/src/signals.c
--- memdbg3/src/signals.c	2013-05-01 08:35:16.546875000 -0500
+++ memdbg2/src/signals.c	2013-05-01 08:11:11.062500000 -0500
@@ -285,6 +285,7 @@ static int sig_getchar(void)
 
 #endif
 
+#ifndef _MSC_VER
 static void signal_children(void)
 {
 	int i;
@@ -292,7 +293,7 @@ static void signal_children(void)
 		if (john_child_pids[i])
 			kill(john_child_pids[i], SIGUSR2);
 }
-
+#endif
 static void sig_install_timer(void);
 
 static void sig_handle_timer(int signum)
@@ -342,6 +343,7 @@ static void sig_handle_timer(int signum)
 		event_ticksafety = event_pending = 1;
 	}
 
+#ifndef _MSC_VER
 	if (sig_getchar() >= 0) {
 		while (sig_getchar() >= 0)
 			continue;
@@ -349,6 +351,7 @@ static void sig_handle_timer(int signum)
 		event_status = event_pending = 1;
 		signal_children();
 	}
+#endif
 
 #if !OS_TIMER
 	signal(SIGALRM, sig_handle_timer);
@@ -401,11 +404,13 @@ static void sig_remove_timer(void)
 	signal(SIGALRM, SIG_DFL);
 }
 
+#ifndef _MSC_VER
 static void sig_handle_status(int signum)
 {
 	event_status = event_pending = 1;
 	signal(SIGUSR2, sig_handle_status);
 }
+#endif
 
 static void sig_done(void);
 
@@ -435,7 +440,9 @@ void sig_init(void)
 	sig_install_update();
 	sig_install_abort();
 	sig_install_timer();
+#ifndef _MSC_VER
 	signal(SIGUSR2, sig_handle_status);
+#endif
 }
 
 static void sig_done(void)