diff --git a/dlls/msvcp110/msvcp110.spec b/dlls/msvcp110/msvcp110.spec
index ee2d62f8cc2..ced9795ffbe 100644
--- a/dlls/msvcp110/msvcp110.spec
+++ b/dlls/msvcp110/msvcp110.spec
@@ -1937,12 +1937,12 @@
 @ stub -arch=arm ?do_date_order@?$time_get@_WV?$istreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@MBA?AW4dateorder@time_base@2@XZ
 @ stub -arch=i386 ?do_date_order@?$time_get@_WV?$istreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@MBE?AW4dateorder@time_base@2@XZ
 @ stub -arch=win64 ?do_date_order@?$time_get@_WV?$istreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@MEBA?AW4dateorder@time_base@2@XZ
-@ stub -arch=arm ?do_encoding@?$codecvt@GDH@std@@MBAHXZ
-@ stub -arch=i386 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ
-@ stub -arch=arm ?do_encoding@?$codecvt@_WDH@std@@MBAHXZ
-@ stub -arch=i386 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ
+@ cdecl -arch=arm ?do_encoding@?$codecvt@GDH@std@@MBAHXZ(ptr) codecvt_wchar_do_encoding
+@ thiscall -arch=i386 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=arm ?do_encoding@?$codecvt@_WDH@std@@MBAHXZ(ptr) codecvt_wchar_do_encoding
+@ thiscall -arch=i386 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
 @ cdecl -arch=arm ?do_encoding@codecvt_base@std@@MBAHXZ(ptr) codecvt_base_do_encoding
 @ thiscall -arch=i386 ?do_encoding@codecvt_base@std@@MBEHXZ(ptr) codecvt_base_do_encoding
 @ cdecl -arch=win64 ?do_encoding@codecvt_base@std@@MEBAHXZ(ptr) codecvt_base_do_encoding
diff --git a/dlls/msvcp120/msvcp120.spec b/dlls/msvcp120/msvcp120.spec
index ddb28c40be7..374a418bda2 100644
--- a/dlls/msvcp120/msvcp120.spec
+++ b/dlls/msvcp120/msvcp120.spec
@@ -1897,12 +1897,12 @@
 @ stub -arch=arm ?do_date_order@?$time_get@_WV?$istreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@MBA?AW4dateorder@time_base@2@XZ
 @ stub -arch=i386 ?do_date_order@?$time_get@_WV?$istreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@MBE?AW4dateorder@time_base@2@XZ
 @ stub -arch=win64 ?do_date_order@?$time_get@_WV?$istreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@MEBA?AW4dateorder@time_base@2@XZ
-@ stub -arch=arm ?do_encoding@?$codecvt@GDH@std@@MBAHXZ
-@ stub -arch=i386 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ
-@ stub -arch=arm ?do_encoding@?$codecvt@_WDH@std@@MBAHXZ
-@ stub -arch=i386 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ
+@ cdecl -arch=arm ?do_encoding@?$codecvt@GDH@std@@MBAHXZ(ptr) codecvt_wchar_do_encoding
+@ thiscall -arch=i386 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=arm ?do_encoding@?$codecvt@_WDH@std@@MBAHXZ(ptr) codecvt_wchar_do_encoding
+@ thiscall -arch=i386 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
 @ cdecl -arch=arm ?do_encoding@codecvt_base@std@@MBAHXZ(ptr) codecvt_base_do_encoding
 @ thiscall -arch=i386 ?do_encoding@codecvt_base@std@@MBEHXZ(ptr) codecvt_base_do_encoding
 @ cdecl -arch=win64 ?do_encoding@codecvt_base@std@@MEBAHXZ(ptr) codecvt_base_do_encoding
diff --git a/dlls/msvcp120_app/msvcp120_app.spec b/dlls/msvcp120_app/msvcp120_app.spec
index 40270669d33..f16402dbbca 100644
--- a/dlls/msvcp120_app/msvcp120_app.spec
+++ b/dlls/msvcp120_app/msvcp120_app.spec
@@ -1897,12 +1897,12 @@
 @ stub -arch=arm ?do_date_order@?$time_get@_WV?$istreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@MBA?AW4dateorder@time_base@2@XZ
 @ stub -arch=i386 ?do_date_order@?$time_get@_WV?$istreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@MBE?AW4dateorder@time_base@2@XZ
 @ stub -arch=win64 ?do_date_order@?$time_get@_WV?$istreambuf_iterator@_WU?$char_traits@_W@std@@@std@@@std@@MEBA?AW4dateorder@time_base@2@XZ
-@ stub -arch=arm ?do_encoding@?$codecvt@GDH@std@@MBAHXZ
-@ stub -arch=i386 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ
-@ stub -arch=arm ?do_encoding@?$codecvt@_WDH@std@@MBAHXZ
-@ stub -arch=i386 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ
+@ cdecl -arch=arm ?do_encoding@?$codecvt@GDH@std@@MBAHXZ(ptr) msvcp120.?do_encoding@?$codecvt@GDH@std@@MBAHXZ
+@ thiscall -arch=i386 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ(ptr) msvcp120.?do_encoding@?$codecvt@GDH@std@@MBEHXZ
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ(ptr) msvcp120.?do_encoding@?$codecvt@GDH@std@@MEBAHXZ
+@ cdecl -arch=arm ?do_encoding@?$codecvt@_WDH@std@@MBAHXZ(ptr) msvcp120.?do_encoding@?$codecvt@_WDH@std@@MBAHXZ
+@ thiscall -arch=i386 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ(ptr) msvcp120.?do_encoding@?$codecvt@_WDH@std@@MBEHXZ
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ(ptr) msvcp120.?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ
 @ cdecl -arch=arm ?do_encoding@codecvt_base@std@@MBAHXZ(ptr) msvcp120.?do_encoding@codecvt_base@std@@MBAHXZ
 @ thiscall -arch=i386 ?do_encoding@codecvt_base@std@@MBEHXZ(ptr) msvcp120.?do_encoding@codecvt_base@std@@MBEHXZ
 @ cdecl -arch=win64 ?do_encoding@codecvt_base@std@@MEBAHXZ(ptr) msvcp120.?do_encoding@codecvt_base@std@@MEBAHXZ
diff --git a/dlls/msvcp60/msvcp60.spec b/dlls/msvcp60/msvcp60.spec
index 9d8daf87115..7bf7b595d9e 100644
--- a/dlls/msvcp60/msvcp60.spec
+++ b/dlls/msvcp60/msvcp60.spec
@@ -2665,8 +2665,8 @@
 @ cdecl -arch=win64 ?do_decimal_point@?$numpunct@D@std@@MEBADXZ(ptr) numpunct_char_do_decimal_point
 @ thiscall -arch=win32 ?do_decimal_point@?$numpunct@G@std@@MBEGXZ(ptr) numpunct_wchar_do_decimal_point
 @ cdecl -arch=win64 ?do_decimal_point@?$numpunct@G@std@@MEBAGXZ(ptr) numpunct_wchar_do_decimal_point
-@ stub -arch=win32 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ
+@ thiscall -arch=win32 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
 @ thiscall -arch=win32 ?do_encoding@codecvt_base@std@@MBEHXZ(ptr) codecvt_base_do_encoding
 @ cdecl -arch=win64 ?do_encoding@codecvt_base@std@@MEBAHXZ(ptr) codecvt_base_do_encoding
 @ thiscall -arch=win32 ?do_falsename@?$numpunct@D@std@@MBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ(ptr ptr) numpunct_char_do_falsename
diff --git a/dlls/msvcp70/msvcp70.spec b/dlls/msvcp70/msvcp70.spec
index f97c87c1f8c..1347b3990d9 100644
--- a/dlls/msvcp70/msvcp70.spec
+++ b/dlls/msvcp70/msvcp70.spec
@@ -2691,10 +2691,10 @@
 @ cdecl -arch=win64 ?do_decimal_point@?$numpunct@G@std@@MEBAGXZ(ptr) numpunct_wchar_do_decimal_point
 @ thiscall -arch=win32 ?do_decimal_point@?$numpunct@_W@std@@MBE_WXZ(ptr) numpunct_wchar_do_decimal_point
 @ cdecl -arch=win64 ?do_decimal_point@?$numpunct@_W@std@@MEBA_WXZ(ptr) numpunct_wchar_do_decimal_point
-@ stub -arch=win32 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ
-@ stub -arch=win32 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ
+@ thiscall -arch=win32 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
+@ thiscall -arch=win32 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
 @ thiscall -arch=i386 ?do_encoding@codecvt_base@std@@MBEHXZ(ptr) codecvt_base_do_encoding
 @ cdecl -arch=win64 ?do_encoding@codecvt_base@std@@MEBAHXZ(ptr) codecvt_base_do_encoding
 @ thiscall -arch=win32 ?do_falsename@?$numpunct@D@std@@MBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ(ptr ptr) numpunct_char_do_falsename
diff --git a/dlls/msvcp71/msvcp71.spec b/dlls/msvcp71/msvcp71.spec
index 46e52138986..d7088259423 100644
--- a/dlls/msvcp71/msvcp71.spec
+++ b/dlls/msvcp71/msvcp71.spec
@@ -2849,10 +2849,10 @@
 @ cdecl -arch=win64 ?do_decimal_point@?$numpunct@G@std@@MEBAGXZ(ptr) numpunct_wchar_do_decimal_point
 @ thiscall -arch=win32 ?do_decimal_point@?$numpunct@_W@std@@MBE_WXZ(ptr) numpunct_wchar_do_decimal_point
 @ cdecl -arch=win64 ?do_decimal_point@?$numpunct@_W@std@@MEBA_WXZ(ptr) numpunct_wchar_do_decimal_point
-@ stub -arch=win32 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ
-@ stub -arch=win32 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ
+@ thiscall -arch=win32 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
+@ thiscall -arch=win32 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
 @ thiscall -arch=win32 ?do_encoding@codecvt_base@std@@MBEHXZ(ptr) codecvt_base_do_encoding
 @ cdecl -arch=win64 ?do_encoding@codecvt_base@std@@MEBAHXZ(ptr) codecvt_base_do_encoding
 @ thiscall -arch=win32 ?do_falsename@?$numpunct@D@std@@MBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ(ptr ptr) numpunct_char_do_falsename
diff --git a/dlls/msvcp80/msvcp80.spec b/dlls/msvcp80/msvcp80.spec
index f6bec69952e..24d034acea5 100644
--- a/dlls/msvcp80/msvcp80.spec
+++ b/dlls/msvcp80/msvcp80.spec
@@ -3290,10 +3290,10 @@
 @ cdecl -arch=win64 ?do_decimal_point@?$numpunct@G@std@@MEBAGXZ(ptr) numpunct_wchar_do_decimal_point
 @ thiscall -arch=win32 ?do_decimal_point@?$numpunct@_W@std@@MBE_WXZ(ptr) numpunct_wchar_do_decimal_point
 @ cdecl -arch=win64 ?do_decimal_point@?$numpunct@_W@std@@MEBA_WXZ(ptr) numpunct_wchar_do_decimal_point
-@ stub -arch=win32 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ
-@ stub -arch=win32 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ
-@ stub -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ
+@ thiscall -arch=win32 ?do_encoding@?$codecvt@GDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
+@ thiscall -arch=win32 ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ(ptr) codecvt_wchar_do_encoding
+@ cdecl -arch=win64 ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ(ptr) codecvt_wchar_do_encoding
 @ thiscall -arch=i386 ?do_encoding@codecvt_base@std@@MBEHXZ(ptr) codecvt_base_do_encoding
 @ cdecl -arch=win64 ?do_encoding@codecvt_base@std@@MEBAHXZ(ptr) codecvt_base_do_encoding
 @ thiscall -arch=win32 ?do_falsename@?$numpunct@D@std@@MBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@XZ(ptr ptr) numpunct_char_do_falsename
diff --git a/dlls/msvcp90/locale.c b/dlls/msvcp90/locale.c
index f3ad140e52d..d0fbee0c72c 100644
--- a/dlls/msvcp90/locale.c
+++ b/dlls/msvcp90/locale.c
@@ -3784,6 +3784,17 @@ int __thiscall codecvt_wchar_do_max_length(const codecvt_wchar *this)
     return MB_LEN_MAX;
 }
 
+/* ?do_encoding@?$codecvt@GDH@std@@MBEHXZ */
+/* ?do_encoding@?$codecvt@GDH@std@@MEBAHXZ */
+/* ?do_encoding@?$codecvt@_WDH@std@@MBEHXZ */
+/* ?do_encoding@?$codecvt@_WDH@std@@MEBAHXZ */
+DEFINE_THISCALL_WRAPPER(codecvt_wchar_do_encoding, 4)
+int __thiscall codecvt_wchar_do_encoding(const codecvt_wchar *this)
+{
+    TRACE("(%p)\n", this);
+    return 0;
+}
+
 /* ?do_in@?$codecvt@GDH@std@@MBEHAAHPBD1AAPBDPAG3AAPAG@Z */
 /* ?do_in@?$codecvt@GDH@std@@MEBAHAEAHPEBD1AEAPEBDPEAG3AEAPEAG@Z */
 /* ?do_in@?$codecvt@_WDH@std@@MBEHAAHPBD1AAPBDPA_W3AAPA_W@Z */
@@ -11316,7 +11327,11 @@ void __asm_dummy_vtables(void) {
 #endif
             VTABLE_ADD_FUNC(codecvt_wchar_do_always_noconv)
             VTABLE_ADD_FUNC(codecvt_wchar_do_max_length)
+#if _MSVCP_VER >= 90 && _MSVCP_VER <= 100
             VTABLE_ADD_FUNC(codecvt_base_do_encoding)
+#else
+            VTABLE_ADD_FUNC(codecvt_wchar_do_encoding)
+#endif
             VTABLE_ADD_FUNC(codecvt_wchar_do_in)
             VTABLE_ADD_FUNC(codecvt_wchar_do_out)
             VTABLE_ADD_FUNC(codecvt_wchar_do_unshift)
@@ -11329,7 +11344,11 @@ void __asm_dummy_vtables(void) {
 #endif
             VTABLE_ADD_FUNC(codecvt_wchar_do_always_noconv)
             VTABLE_ADD_FUNC(codecvt_wchar_do_max_length)
+#if _MSVCP_VER >= 90 && _MSVCP_VER <= 100
             VTABLE_ADD_FUNC(codecvt_base_do_encoding)
+#else
+            VTABLE_ADD_FUNC(codecvt_wchar_do_encoding)
+#endif
             VTABLE_ADD_FUNC(codecvt_wchar_do_in)
             VTABLE_ADD_FUNC(codecvt_wchar_do_out)
             VTABLE_ADD_FUNC(codecvt_wchar_do_unshift)