diff --git a/INSTALL.Windows.md b/INSTALL.Windows.md
index 889bb0b..a9ceb57 100644
--- a/INSTALL.Windows.md
+++ b/INSTALL.Windows.md
@@ -34,10 +34,19 @@ will also need to install Windows Driver Kit (WDK) 8.1 Update.
 
 It is important to get the Visual Studio related environment variables and to
 have the $PATH inside the bash to point to the proper compiler and linker. One
-easy way to achieve this is to get into the "Developer Command prompt for visual
-studio" and through it enter into the bash shell available from msys by typing
+easy way to achieve this is to get into the "VS2013 x86 Native Tools Command
+Prompt"(in a default installation of Visual Studio this can be found under the
+following location:
+C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\Tools\Shortcuts)
+and through it enter into the bash shell available from msys by typing
 'bash --login'.
 
+We also support compiling on 64 bit. To compile everything under x64 open the
+"VS2013 x64 Native Tools Command Prompt"(if your current running OS is 64 bit)
+or "VS2013 x64 Cross Tools Command Prompt"(if your current running OS is 64
+bit) instead of opening its x86 variant. This will point the compiler and the
+linker to their 64 bit equivalent.
+
 If after the above step, a 'which link' inside MSYS's bash says,
 "/bin/link.exe", rename /bin/link.exe to something else so that the
 Visual studio's linker is used. You should also see a 'which sort' report
diff --git a/Makefile.am b/Makefile.am
index a659814..ab1a135 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -19,6 +19,7 @@ AM_CPPFLAGS += -I $(top_srcdir)/datapath-windows/include
 AM_CPPFLAGS += $(PTHREAD_INCLUDES)
 AM_CPPFLAGS += $(MSVC_CFLAGS)
 AM_LDFLAGS += $(PTHREAD_LDFLAGS)
+AM_LDFLAGS += $(MSVC64_LDFLAGS)
 endif
 
 AM_CPPFLAGS += -I $(top_srcdir)/include
diff --git a/configure.ac b/configure.ac
index 36387a1..fd04929 100644
--- a/configure.ac
+++ b/configure.ac
@@ -85,6 +85,7 @@ AC_SEARCH_LIBS([pthread_create], [pthread])
 AC_FUNC_STRERROR_R
 
 OVS_CHECK_ESX
+OVS_CHECK_WIN64
 OVS_CHECK_WIN32
 OVS_CHECK_VISUAL_STUDIO_DDK
 OVS_CHECK_COVERAGE
diff --git a/m4/openvswitch.m4 b/m4/openvswitch.m4
index 087c7e5..98e5ce9 100644
--- a/m4/openvswitch.m4
+++ b/m4/openvswitch.m4
@@ -70,6 +70,22 @@ AC_DEFUN([OVS_CHECK_ESX],
       AC_DEFINE([ESX], [1], [Define to 1 if building on ESX.])
    fi])
 
+dnl Checks for MSVC x64 compiler.
+AC_DEFUN([OVS_CHECK_WIN64],
+  [AC_CACHE_CHECK(
+    [for MSVC x64 compiler],
+    [cl_cv_x64],
+    [dnl "cl" writes x64 output to stdin:
+     if (cl) 2>&1 | grep 'x64' >/dev/null 2>&1; then
+       cl_cv_x64=yes
+       MSVC64_LDFLAGS=" /MACHINE:X64 "
+     else
+       cl_cv_x64=no
+       MSVC64_LDFLAGS=""
+     fi])
+     AC_SUBST([MSVC64_LDFLAGS])
+])
+
 dnl Checks for WINDOWS.
 AC_DEFUN([OVS_CHECK_WIN32],
   [AC_CHECK_HEADER([windows.h],
@@ -86,11 +102,24 @@ AC_DEFUN([OVS_CHECK_WIN32],
             AC_MSG_ERROR([Invalid --with-pthread value])
               ;;
             *)
-            PTHREAD_WIN32_DIR=$withval/lib/x86
-            PTHREAD_WIN32_DIR_DLL=/${withval/:/}/dll/x86
+            if (cl) 2>&1 | grep 'x64' >/dev/null 2>&1; then
+              cl_cv_x64=yes
+            else
+              cl_cv_x64=no
+            fi
+            if test "$cl_cv_x64" = yes; then
+                PTHREAD_WIN32_DIR=$withval/lib/x64
+                PTHREAD_WIN32_DIR_DLL=/${withval/:/}/dll/x64
+                PTHREAD_WIN32_DIR_DLL_WIN_FORM=$withval/dll/x64
+            else
+                PTHREAD_WIN32_DIR=$withval/lib/x86
+                PTHREAD_WIN32_DIR_DLL=/${withval/:/}/dll/x86
+                PTHREAD_WIN32_DIR_DLL_WIN_FORM=$withval/dll/x86
+            fi
             PTHREAD_INCLUDES=-I$withval/include
             PTHREAD_LDFLAGS=-L$PTHREAD_WIN32_DIR
             PTHREAD_LIBS="-lpthreadVC2"
+            AC_SUBST([PTHREAD_WIN32_DIR_DLL_WIN_FORM])
             AC_SUBST([PTHREAD_WIN32_DIR_DLL])
             AC_SUBST([PTHREAD_INCLUDES])
             AC_SUBST([PTHREAD_LDFLAGS])
diff --git a/windows/automake.mk b/windows/automake.mk
index c8165a4..fa610ec 100644
--- a/windows/automake.mk
+++ b/windows/automake.mk
@@ -26,7 +26,7 @@ windows_installer: all
 	cp -f $(top_srcdir)/ovsdb/ovsdb-client.pdb windows/ovs-windows-installer/Symbols/
 	cp -f $(top_srcdir)/ovsdb/ovsdb-tool.pdb windows/ovs-windows-installer/Symbols/
 #Third party files needed by the installer
-	cp -f $(PTHREAD_TEMP_DIR)/../../dll/x86/*.dll windows/ovs-windows-installer/Binaries/
+	cp -f $(PTHREAD_WIN32_DIR_DLL_WIN_FORM)/*.dll windows/ovs-windows-installer/Binaries/
 	cp -f "/c/Program Files (x86)/Common Files/Merge Modules/Microsoft_VC120_CRT_x86.msm" windows/ovs-windows-installer/Redist/Microsoft_VC120_CRT_x86.msm
 #Forwarding extension files needed for the installer
 	cp -f $(top_srcdir)/datapath-windows/x64/Win8$(VSTUDIO_CONFIG)/package/ovsext.cat windows/ovs-windows-installer/Driver/Win8/ovsext.cat
