diff --git a/libvncclient/rfbproto.c b/libvncclient/rfbproto.c
index 0afa3dc..5893a24 100644
--- a/libvncclient/rfbproto.c
+++ b/libvncclient/rfbproto.c
@@ -53,7 +53,12 @@
 #endif
 #include <jpeglib.h>
 #endif
+
+#ifndef _MSC_VER
+/* Strings.h is not available in MSVC */
 #include <strings.h>
+#endif
+
 #include <stdarg.h>
 #include <time.h>
 
@@ -65,7 +70,7 @@
 #include "tls.h"
 
 #ifdef _MSC_VER
-#  define snprintf _snprintf
+#  define snprintf _snprintf /* MSVC went straight to the underscored syntax */
 #endif
 
 /*
diff --git a/libvncclient/vncviewer.c b/libvncclient/vncviewer.c
index 9d657ed..b12116c 100644
--- a/libvncclient/vncviewer.c
+++ b/libvncclient/vncviewer.c
@@ -26,6 +26,10 @@
 #include <winsock2.h>
 #endif
 
+#ifdef _MSC_VER
+#define strdup _strdup /* Prevent POSIX deprecation warnings */
+#endif
+
 #ifdef __STRICT_ANSI__
 #define _BSD_SOURCE
 #define _POSIX_SOURCE
diff --git a/libvncserver/rfbserver.c b/libvncserver/rfbserver.c
index df7d74c..4056318 100644
--- a/libvncserver/rfbserver.c
+++ b/libvncserver/rfbserver.c
@@ -83,6 +83,13 @@
 #include "rfbssl.h"
 #endif
 
+#ifdef _MSC_VER
+#define snprintf _snprintf /* Missing in MSVC */
+/* Prevent POSIX deprecation warnings */
+#define close _close
+#define strdup _strdup 
+#endif
+
 #ifdef __MINGW32__
 static int compat_mkdir(const char *path, int mode)
 {
diff --git a/libvncserver/sockets.c b/libvncserver/sockets.c
index d2f814b..6c225e9 100644
--- a/libvncserver/sockets.c
+++ b/libvncserver/sockets.c
@@ -109,6 +109,10 @@ int deny_severity=LOG_WARNING;
 #define closesocket close
 #endif
 
+#ifdef _MSC_VER
+#define snprintf _snprintf /* Missing in MSVC */
+#endif
+
 int rfbMaxClientWait = 20000;   /* time (ms) after which we decide client has
                                    gone away - needed to stop us hanging */
 
diff --git a/libvncserver/stats.c b/libvncserver/stats.c
index 39de1c6..b99da01 100644
--- a/libvncserver/stats.c
+++ b/libvncserver/stats.c
@@ -26,6 +26,10 @@
 
 #include <rfb/rfb.h>
 
+#ifdef _MSC_VER
+#define snprintf _snprintf /* Missing in MSVC */
+#endif
+
 char *messageNameServer2Client(uint32_t type, char *buf, int len);
 char *messageNameClient2Server(uint32_t type, char *buf, int len);
 char *encodingName(uint32_t enc, char *buf, int len);
diff --git a/libvncserver/websockets.c b/libvncserver/websockets.c
index bd5d9d0..34f04d7 100644
--- a/libvncserver/websockets.c
+++ b/libvncserver/websockets.c
@@ -31,10 +31,13 @@
 #endif
 
 #include <rfb/rfb.h>
-#include <resolv.h> /* __b64_ntop */
 /* errno */
 #include <errno.h>
 
+#ifndef _MSC_VER
+#include <resolv.h> /* __b64_ntop */
+#endif
+
 #ifdef LIBVNCSERVER_HAVE_ENDIAN_H
 #include <endian.h>
 #elif LIBVNCSERVER_HAVE_SYS_ENDIAN_H