diff --git a/configure b/configure
index be06b95b845..c291a433b61 100755
--- a/configure
+++ b/configure
@@ -17163,6 +17163,7 @@ wine_fn_config_dll msvcr100 enable_msvcr100 implib
 wine_fn_config_test dlls/msvcr100/tests msvcr100_test
 wine_fn_config_dll msvcr110 enable_msvcr110 implib
 wine_fn_config_dll msvcr120 enable_msvcr120 implib
+wine_fn_config_test dlls/msvcr120/tests msvcr120_test
 wine_fn_config_dll msvcr70 enable_msvcr70 implib
 wine_fn_config_dll msvcr71 enable_msvcr71 implib
 wine_fn_config_dll msvcr80 enable_msvcr80 implib
diff --git a/configure.ac b/configure.ac
index c33869e41e5..8f8a732c55b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3037,6 +3037,7 @@ WINE_CONFIG_DLL(msvcr100,,[implib])
 WINE_CONFIG_TEST(dlls/msvcr100/tests)
 WINE_CONFIG_DLL(msvcr110,,[implib])
 WINE_CONFIG_DLL(msvcr120,,[implib])
+WINE_CONFIG_TEST(dlls/msvcr120/tests)
 WINE_CONFIG_DLL(msvcr70,,[implib])
 WINE_CONFIG_DLL(msvcr71,,[implib])
 WINE_CONFIG_DLL(msvcr80,,[implib])
diff --git a/dlls/msvcr120/tests/Makefile.in b/dlls/msvcr120/tests/Makefile.in
new file mode 100644
index 00000000000..5a88f38d276
--- /dev/null
+++ b/dlls/msvcr120/tests/Makefile.in
@@ -0,0 +1,5 @@
+TESTDLL   = msvcr120.dll
+APPMODE   = -mno-cygwin
+
+C_SRCS = \
+	msvcr120.c
diff --git a/dlls/msvcr120/tests/msvcr120.c b/dlls/msvcr120/tests/msvcr120.c
new file mode 100644
index 00000000000..bed10022192
--- /dev/null
+++ b/dlls/msvcr120/tests/msvcr120.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2014 Yifu Wang for ESRI
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include <errno.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <wchar.h>
+#include <stdio.h>
+
+#include <windef.h>
+#include <winbase.h>
+#include "wine/test.h"
+
+#include <locale.h>
+
+struct MSVCRT_lconv
+{
+    char* decimal_point;
+    char* thousands_sep;
+    char* grouping;
+    char* int_curr_symbol;
+    char* currency_symbol;
+    char* mon_decimal_point;
+    char* mon_thousands_sep;
+    char* mon_grouping;
+    char* positive_sign;
+    char* negative_sign;
+    char int_frac_digits;
+    char frac_digits;
+    char p_cs_precedes;
+    char p_sep_by_space;
+    char n_cs_precedes;
+    char n_sep_by_space;
+    char p_sign_posn;
+    char n_sign_posn;
+    wchar_t* _W_decimal_point;
+    wchar_t* _W_thousands_sep;
+    wchar_t* _W_int_curr_symbol;
+    wchar_t* _W_currency_symbol;
+    wchar_t* _W_mon_decimal_point;
+    wchar_t* _W_mon_thousands_sep;
+    wchar_t* _W_positive_sign;
+    wchar_t* _W_negative_sign;
+};
+
+static char* (CDECL *p_setlocale)(int category, const char* locale);
+static struct MSVCRT_lconv* (CDECL *p_localeconv)(void);
+static size_t (CDECL *p_wcstombs_s)(size_t *ret, char* dest, size_t sz, const wchar_t* src, size_t max);
+
+static BOOL init(void)
+{
+    HMODULE module;
+
+    module = LoadLibraryA("msvcr120.dll");
+    if (!module)
+    {
+        win_skip("msvcr120.dll not installed\n");
+        return FALSE;
+    }
+
+    p_setlocale = (void*)GetProcAddress(module, "setlocale");
+    p_localeconv = (void*)GetProcAddress(module, "localeconv");
+    p_wcstombs_s = (void*)GetProcAddress(module, "wcstombs_s");
+    return TRUE;
+}
+
+void test_lconv_helper(const char *locstr)
+{
+    struct MSVCRT_lconv *lconv;
+    char mbs[256];
+    size_t i;
+
+    if(!p_setlocale(LC_ALL, locstr))
+    {
+        win_skip("locale %s not available\n", locstr);
+        return;
+    }
+
+    lconv = p_localeconv();
+
+    /* If multi-byte version available, asserts that wide char version also available.
+     * If wide char version can be converted to a multi-byte string , asserts that the
+     * conversion result is the same as the multi-byte version.
+     */
+    if(strlen(lconv->decimal_point) > 0)
+        ok(wcslen(lconv->_W_decimal_point) > 0, "%s: decimal_point\n", locstr);
+    if(p_wcstombs_s(&i, mbs, 256, lconv->_W_decimal_point, 256) == 0)
+        ok(strcmp(mbs, lconv->decimal_point) == 0, "%s: decimal_point\n", locstr);
+
+    if(strlen(lconv->thousands_sep) > 0)
+        ok(wcslen(lconv->_W_thousands_sep) > 0, "%s: thousands_sep\n", locstr);
+    if(p_wcstombs_s(&i, mbs, 256, lconv->_W_thousands_sep, 256) == 0)
+        ok(strcmp(mbs, lconv->thousands_sep) == 0, "%s: thousands_sep\n", locstr);
+
+    if(strlen(lconv->int_curr_symbol) > 0)
+        ok(wcslen(lconv->_W_int_curr_symbol) > 0, "%s: int_curr_symbol\n", locstr);
+    if(p_wcstombs_s(&i, mbs, 256, lconv->_W_int_curr_symbol, 256) == 0)
+        ok(strcmp(mbs, lconv->int_curr_symbol) == 0, "%s: int_curr_symbol\n", locstr);
+
+    if(strlen(lconv->currency_symbol) > 0)
+        ok(wcslen(lconv->_W_currency_symbol) > 0, "%s: currency_symbol\n", locstr);
+    if(p_wcstombs_s(&i, mbs, 256, lconv->_W_currency_symbol, 256) == 0)
+        ok(strcmp(mbs, lconv->currency_symbol) == 0, "%s: currency_symbol\n", locstr);
+
+    if(strlen(lconv->mon_decimal_point) > 0)
+        ok(wcslen(lconv->_W_mon_decimal_point) > 0, "%s: decimal_point\n", locstr);
+    if(p_wcstombs_s(&i, mbs, 256, lconv->_W_mon_decimal_point, 256) == 0)
+        ok(strcmp(mbs, lconv->mon_decimal_point) == 0, "%s: decimal_point\n", locstr);
+
+    if(strlen(lconv->positive_sign) > 0)
+        ok(wcslen(lconv->_W_positive_sign) > 0, "%s: positive_sign\n", locstr);
+    if(p_wcstombs_s(&i, mbs, 256, lconv->_W_positive_sign, 256) == 0)
+        ok(strcmp(mbs, lconv->positive_sign) == 0, "%s: positive_sign\n", locstr);
+
+    if(strlen(lconv->negative_sign) > 0)
+        ok(wcslen(lconv->_W_negative_sign) > 0, "%s: negative_sign\n", locstr);
+    if(p_wcstombs_s(&i, mbs, 256, lconv->_W_negative_sign, 256) == 0)
+        ok(strcmp(mbs, lconv->negative_sign) == 0, "%s: negative_sign\n", locstr);
+}
+
+void test_lconv(void)
+{
+    int i;
+    const char *locstrs[] =
+    {
+        "American", "Belgian", "Chinese",
+        "Dutch", "English", "French",
+        "German", "Hungarian", "Icelandic",
+        "Japanese", "Korean", "Spanish"
+    };
+
+    for(i = 0; i < sizeof(locstrs) / sizeof(char *); i ++)
+        test_lconv_helper(locstrs[i]);
+}
+
+START_TEST(msvcr120)
+{
+    if (!init()) return;
+    test_lconv();
+}
diff --git a/dlls/msvcrt/locale.c b/dlls/msvcrt/locale.c
index 992aa3ecb7f..2b1efc6ac1c 100644
--- a/dlls/msvcrt/locale.c
+++ b/dlls/msvcrt/locale.c
@@ -659,6 +659,16 @@ void free_locinfo(MSVCRT_pthreadlocinfo locinfo)
         MSVCRT_free(locinfo->lconv->mon_grouping);
         MSVCRT_free(locinfo->lconv->positive_sign);
         MSVCRT_free(locinfo->lconv->negative_sign);
+#if _MSVCR_VER >= 120
+        MSVCRT_free(locinfo->lconv->_W_decimal_point);
+        MSVCRT_free(locinfo->lconv->_W_thousands_sep);
+        MSVCRT_free(locinfo->lconv->_W_int_curr_symbol);
+        MSVCRT_free(locinfo->lconv->_W_currency_symbol);
+        MSVCRT_free(locinfo->lconv->_W_mon_decimal_point);
+        MSVCRT_free(locinfo->lconv->_W_mon_thousands_sep);
+        MSVCRT_free(locinfo->lconv->_W_positive_sign);
+        MSVCRT_free(locinfo->lconv->_W_negative_sign);
+#endif
     }
     MSVCRT_free(locinfo->lconv_intl_refcount);
     MSVCRT_free(locinfo->lconv_num_refcount);
@@ -755,6 +765,9 @@ MSVCRT__locale_t CDECL MSVCRT__create_locale(int category, const char *locale)
     LCID lcid[6] = { 0 }, lcid_tmp;
     unsigned short cp[6] = { 0 };
     char buf[256];
+#if _MSVCR_VER >= 120
+    MSVCRT_wchar_t wbuf[256];
+#endif
     int i, ret, size;
 
     TRACE("(%d %s)\n", category, locale);
@@ -1092,6 +1105,63 @@ MSVCRT__locale_t CDECL MSVCRT__create_locale(int category, const char *locale)
             MSVCRT__free_locale(loc);
             return NULL;
         }
+
+#if _MSVCR_VER >= 120
+        i = GetLocaleInfoW(lcid[MSVCRT_LC_MONETARY], LOCALE_SINTLSYMBOL
+                |LOCALE_NOUSEROVERRIDE, wbuf, 256);
+        if(i && (loc->locinfo->lconv->_W_int_curr_symbol = MSVCRT_malloc(i * sizeof(MSVCRT_wchar_t))))
+            memcpy(loc->locinfo->lconv->_W_int_curr_symbol, wbuf, i * sizeof(MSVCRT_wchar_t));
+        else {
+            MSVCRT__free_locale(loc);
+            return NULL;
+        }
+
+        i = GetLocaleInfoW(lcid[MSVCRT_LC_MONETARY], LOCALE_SCURRENCY
+                |LOCALE_NOUSEROVERRIDE, wbuf, 256);
+        if(i && (loc->locinfo->lconv->_W_currency_symbol = MSVCRT_malloc(i * sizeof(MSVCRT_wchar_t))))
+            memcpy(loc->locinfo->lconv->_W_currency_symbol, wbuf, i * sizeof(MSVCRT_wchar_t));
+        else {
+            MSVCRT__free_locale(loc);
+            return NULL;
+        }
+
+        i = GetLocaleInfoW(lcid[MSVCRT_LC_MONETARY], LOCALE_SMONDECIMALSEP
+                |LOCALE_NOUSEROVERRIDE, wbuf, 256);
+        if(i && (loc->locinfo->lconv->_W_mon_decimal_point = MSVCRT_malloc(i * sizeof(MSVCRT_wchar_t))))
+            memcpy(loc->locinfo->lconv->_W_mon_decimal_point, wbuf, i * sizeof(MSVCRT_wchar_t));
+        else {
+            MSVCRT__free_locale(loc);
+            return NULL;
+        }
+
+        i = GetLocaleInfoW(lcid[MSVCRT_LC_MONETARY], LOCALE_SMONTHOUSANDSEP
+                |LOCALE_NOUSEROVERRIDE, wbuf, 256);
+        if(i && (loc->locinfo->lconv->_W_mon_thousands_sep = MSVCRT_malloc(i * sizeof(MSVCRT_wchar_t))))
+            memcpy(loc->locinfo->lconv->_W_mon_thousands_sep, wbuf, i * sizeof(MSVCRT_wchar_t));
+        else {
+            MSVCRT__free_locale(loc);
+            return NULL;
+        }
+
+        i = GetLocaleInfoW(lcid[MSVCRT_LC_MONETARY], LOCALE_SPOSITIVESIGN
+                |LOCALE_NOUSEROVERRIDE, wbuf, 256);
+        if(i && (loc->locinfo->lconv->_W_positive_sign = MSVCRT_malloc(i * sizeof(MSVCRT_wchar_t))))
+            memcpy(loc->locinfo->lconv->_W_positive_sign, wbuf, i * sizeof(MSVCRT_wchar_t));
+        else {
+            MSVCRT__free_locale(loc);
+            return NULL;
+        }
+
+        i = GetLocaleInfoW(lcid[MSVCRT_LC_MONETARY], LOCALE_SNEGATIVESIGN
+                |LOCALE_NOUSEROVERRIDE, wbuf, 256);
+        if(i && (loc->locinfo->lconv->_W_negative_sign = MSVCRT_malloc(i * sizeof(MSVCRT_wchar_t))))
+            memcpy(loc->locinfo->lconv->_W_negative_sign, wbuf, i * sizeof(MSVCRT_wchar_t));
+        else {
+            MSVCRT__free_locale(loc);
+            return NULL;
+        }
+#endif
+
     } else {
         loc->locinfo->lconv->int_curr_symbol = MSVCRT_malloc(sizeof(char));
         loc->locinfo->lconv->currency_symbol = MSVCRT_malloc(sizeof(char));
@@ -1125,6 +1195,29 @@ MSVCRT__locale_t CDECL MSVCRT__create_locale(int category, const char *locale)
         loc->locinfo->lconv->p_sign_posn = 127;
         loc->locinfo->lconv->n_sign_posn = 127;
 
+#if _MSVCR_VER >= 120
+        loc->locinfo->lconv->_W_int_curr_symbol = MSVCRT_malloc(sizeof(MSVCRT_wchar_t));
+        loc->locinfo->lconv->_W_currency_symbol = MSVCRT_malloc(sizeof(MSVCRT_wchar_t));
+        loc->locinfo->lconv->_W_mon_decimal_point = MSVCRT_malloc(sizeof(MSVCRT_wchar_t));
+        loc->locinfo->lconv->_W_mon_thousands_sep = MSVCRT_malloc(sizeof(MSVCRT_wchar_t));
+        loc->locinfo->lconv->_W_positive_sign = MSVCRT_malloc(sizeof(MSVCRT_wchar_t));
+        loc->locinfo->lconv->_W_negative_sign = MSVCRT_malloc(sizeof(MSVCRT_wchar_t));
+
+        if(!loc->locinfo->lconv->_W_int_curr_symbol || !loc->locinfo->lconv->_W_currency_symbol
+                || !loc->locinfo->lconv->_W_mon_decimal_point || !loc->locinfo->lconv->_W_mon_thousands_sep
+                || !loc->locinfo->lconv->positive_sign || !loc->locinfo->lconv->negative_sign) {
+            MSVCRT__free_locale(loc);
+            return NULL;
+        }
+
+        loc->locinfo->lconv->_W_int_curr_symbol[0] = '\0';
+        loc->locinfo->lconv->_W_currency_symbol[0] = '\0';
+        loc->locinfo->lconv->_W_mon_decimal_point[0] = '\0';
+        loc->locinfo->lconv->_W_mon_thousands_sep[0] = '\0';
+        loc->locinfo->lconv->_W_positive_sign[0] = '\0';
+        loc->locinfo->lconv->_W_negative_sign[0] = '\0';
+#endif
+
         loc->locinfo->lc_category[MSVCRT_LC_MONETARY].locale = MSVCRT__strdup("C");
     }
 
@@ -1177,6 +1270,27 @@ MSVCRT__locale_t CDECL MSVCRT__create_locale(int category, const char *locale)
             MSVCRT__free_locale(loc);
             return NULL;
         }
+
+#if _MSVCR_VER >= 120
+        i = GetLocaleInfoW(lcid[MSVCRT_LC_NUMERIC], LOCALE_SDECIMAL
+                |LOCALE_NOUSEROVERRIDE, wbuf, 256);
+        if(i && (loc->locinfo->lconv->_W_decimal_point = MSVCRT_malloc(i * sizeof(MSVCRT_wchar_t))))
+            memcpy(loc->locinfo->lconv->_W_decimal_point, wbuf, i * sizeof(MSVCRT_wchar_t));
+        else {
+            MSVCRT__free_locale(loc);
+            return NULL;
+        }
+
+        i = GetLocaleInfoW(lcid[MSVCRT_LC_NUMERIC], LOCALE_STHOUSAND
+                |LOCALE_NOUSEROVERRIDE, wbuf, 256);
+        if(i && (loc->locinfo->lconv->_W_thousands_sep = MSVCRT_malloc(i * sizeof(MSVCRT_wchar_t))))
+            memcpy(loc->locinfo->lconv->_W_thousands_sep, wbuf, i * sizeof(MSVCRT_wchar_t));
+        else {
+            MSVCRT__free_locale(loc);
+            return NULL;
+        }
+#endif
+
     } else {
         loc->locinfo->lconv->decimal_point = MSVCRT_malloc(sizeof(char[2]));
         loc->locinfo->lconv->thousands_sep = MSVCRT_malloc(sizeof(char));
@@ -1192,6 +1306,20 @@ MSVCRT__locale_t CDECL MSVCRT__create_locale(int category, const char *locale)
         loc->locinfo->lconv->thousands_sep[0] = '\0';
         loc->locinfo->lconv->grouping[0] = '\0';
 
+#if _MSVCR_VER >= 120
+        loc->locinfo->lconv->_W_decimal_point = MSVCRT_malloc(sizeof(MSVCRT_wchar_t[2]));
+        loc->locinfo->lconv->_W_thousands_sep = MSVCRT_malloc(sizeof(MSVCRT_wchar_t));
+
+        if(!loc->locinfo->lconv->_W_decimal_point || !loc->locinfo->lconv->_W_thousands_sep) {
+            MSVCRT__free_locale(loc);
+            return NULL;
+        }
+
+        loc->locinfo->lconv->_W_decimal_point[0] = '.';
+        loc->locinfo->lconv->_W_decimal_point[1] = '\0';
+        loc->locinfo->lconv->_W_thousands_sep[0] = '\0';
+#endif
+
         loc->locinfo->lc_category[MSVCRT_LC_NUMERIC].locale = MSVCRT__strdup("C");
     }
 
@@ -1357,6 +1485,22 @@ char* CDECL MSVCRT_setlocale(int category, const char* locale)
                     (void**)&loc->locinfo->lconv->positive_sign);
             swap_pointers((void**)&locinfo->lconv->negative_sign,
                     (void**)&loc->locinfo->lconv->negative_sign);
+
+#if _MSVCR_VER >= 120
+            swap_pointers((void**)&locinfo->lconv->_W_int_curr_symbol,
+                    (void**)&loc->locinfo->lconv->_W_int_curr_symbol);
+            swap_pointers((void**)&locinfo->lconv->_W_currency_symbol,
+                    (void**)&loc->locinfo->lconv->_W_currency_symbol);
+            swap_pointers((void**)&locinfo->lconv->_W_mon_decimal_point,
+                    (void**)&loc->locinfo->lconv->_W_mon_decimal_point);
+            swap_pointers((void**)&locinfo->lconv->_W_mon_thousands_sep,
+                    (void**)&loc->locinfo->lconv->_W_mon_thousands_sep);
+            swap_pointers((void**)&locinfo->lconv->_W_positive_sign,
+                    (void**)&loc->locinfo->lconv->_W_positive_sign);
+            swap_pointers((void**)&locinfo->lconv->_W_negative_sign,
+                    (void**)&loc->locinfo->lconv->_W_negative_sign);
+#endif
+
             locinfo->lconv->int_frac_digits = loc->locinfo->lconv->int_frac_digits;
             locinfo->lconv->frac_digits = loc->locinfo->lconv->frac_digits;
             locinfo->lconv->p_cs_precedes = loc->locinfo->lconv->p_cs_precedes;
@@ -1384,6 +1528,13 @@ char* CDECL MSVCRT_setlocale(int category, const char* locale)
             swap_pointers((void**)&locinfo->lconv->grouping,
                     (void**)&loc->locinfo->lconv->grouping);
 
+#if _MSVCR_VER >= 120
+            swap_pointers((void**)&locinfo->lconv->_W_decimal_point,
+                    (void**)&loc->locinfo->lconv->_W_decimal_point);
+            swap_pointers((void**)&locinfo->lconv->_W_thousands_sep,
+                    (void**)&loc->locinfo->lconv->_W_thousands_sep);
+#endif
+
             if(category != MSVCRT_LC_ALL)
                 break;
             /* fall through */
diff --git a/dlls/msvcrt/msvcrt.h b/dlls/msvcrt/msvcrt.h
index 72d529d7982..f3970877914 100644
--- a/dlls/msvcrt/msvcrt.h
+++ b/dlls/msvcrt/msvcrt.h
@@ -366,6 +366,16 @@ struct MSVCRT_lconv {
     char n_sep_by_space;
     char p_sign_posn;
     char n_sign_posn;
+#if _MSVCR_VER >= 120
+    MSVCRT_wchar_t* _W_decimal_point;
+    MSVCRT_wchar_t* _W_thousands_sep;
+    MSVCRT_wchar_t* _W_int_curr_symbol;
+    MSVCRT_wchar_t* _W_currency_symbol;
+    MSVCRT_wchar_t* _W_mon_decimal_point;
+    MSVCRT_wchar_t* _W_mon_thousands_sep;
+    MSVCRT_wchar_t* _W_positive_sign;
+    MSVCRT_wchar_t* _W_negative_sign;
+#endif
 };
 
 struct MSVCRT__exception {