diff --git a/configure b/configure
index 60ec9898a66..5bf21e4ef73 100755
--- a/configure
+++ b/configure
@@ -1028,6 +1028,7 @@ enable_api_ms_win_core_winrt_l1_1_0
 enable_api_ms_win_core_winrt_registration_l1_1_0
 enable_api_ms_win_core_winrt_roparameterizediid_l1_1_0
 enable_api_ms_win_core_winrt_string_l1_1_0
+enable_api_ms_win_core_winrt_string_l1_1_1
 enable_api_ms_win_core_wow64_l1_1_0
 enable_api_ms_win_core_wow64_l1_1_1
 enable_api_ms_win_core_xstate_l1_1_0
@@ -19132,6 +19133,7 @@ wine_fn_config_makefile dlls/api-ms-win-core-winrt-l1-1-0 enable_api_ms_win_core
 wine_fn_config_makefile dlls/api-ms-win-core-winrt-registration-l1-1-0 enable_api_ms_win_core_winrt_registration_l1_1_0
 wine_fn_config_makefile dlls/api-ms-win-core-winrt-roparameterizediid-l1-1-0 enable_api_ms_win_core_winrt_roparameterizediid_l1_1_0
 wine_fn_config_makefile dlls/api-ms-win-core-winrt-string-l1-1-0 enable_api_ms_win_core_winrt_string_l1_1_0
+wine_fn_config_makefile dlls/api-ms-win-core-winrt-string-l1-1-1 enable_api_ms_win_core_winrt_string_l1_1_1
 wine_fn_config_makefile dlls/api-ms-win-core-wow64-l1-1-0 enable_api_ms_win_core_wow64_l1_1_0
 wine_fn_config_makefile dlls/api-ms-win-core-wow64-l1-1-1 enable_api_ms_win_core_wow64_l1_1_1
 wine_fn_config_makefile dlls/api-ms-win-core-xstate-l1-1-0 enable_api_ms_win_core_xstate_l1_1_0
diff --git a/configure.ac b/configure.ac
index 82a3c46a24c..878fa4c0fd9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2984,6 +2984,7 @@ WINE_CONFIG_MAKEFILE(dlls/api-ms-win-core-winrt-l1-1-0)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-core-winrt-registration-l1-1-0)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-core-winrt-roparameterizediid-l1-1-0)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-core-winrt-string-l1-1-0)
+WINE_CONFIG_MAKEFILE(dlls/api-ms-win-core-winrt-string-l1-1-1)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-core-wow64-l1-1-0)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-core-wow64-l1-1-1)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-core-xstate-l1-1-0)
diff --git a/dlls/api-ms-win-core-winrt-string-l1-1-1/Makefile.in b/dlls/api-ms-win-core-winrt-string-l1-1-1/Makefile.in
new file mode 100644
index 00000000000..df4284a85cb
--- /dev/null
+++ b/dlls/api-ms-win-core-winrt-string-l1-1-1/Makefile.in
@@ -0,0 +1 @@
+MODULE    = api-ms-win-core-winrt-string-l1-1-1.dll
diff --git a/dlls/api-ms-win-core-winrt-string-l1-1-1/api-ms-win-core-winrt-string-l1-1-1.spec b/dlls/api-ms-win-core-winrt-string-l1-1-1/api-ms-win-core-winrt-string-l1-1-1.spec
new file mode 100644
index 00000000000..bb11ca2d538
--- /dev/null
+++ b/dlls/api-ms-win-core-winrt-string-l1-1-1/api-ms-win-core-winrt-string-l1-1-1.spec
@@ -0,0 +1,26 @@
+@ stub HSTRING_UserFree
+@ stub HSTRING_UserFree64
+@ stub HSTRING_UserMarshal
+@ stub HSTRING_UserMarshal64
+@ stub HSTRING_UserSize
+@ stub HSTRING_UserSize64
+@ stub HSTRING_UserUnmarshal
+@ stub HSTRING_UserUnmarshal64
+@ stdcall WindowsCompareStringOrdinal(ptr ptr ptr) combase.WindowsCompareStringOrdinal
+@ stdcall WindowsConcatString(ptr ptr ptr) combase.WindowsConcatString
+@ stdcall WindowsCreateString(wstr long ptr) combase.WindowsCreateString
+@ stdcall WindowsCreateStringReference(wstr long ptr ptr) combase.WindowsCreateStringReference
+@ stdcall WindowsDeleteString(ptr) combase.WindowsDeleteString
+@ stdcall WindowsDeleteStringBuffer(ptr) combase.WindowsDeleteStringBuffer
+@ stdcall WindowsDuplicateString(ptr ptr) combase.WindowsDuplicateString
+@ stdcall WindowsGetStringLen(ptr) combase.WindowsGetStringLen
+@ stdcall WindowsGetStringRawBuffer(ptr ptr) combase.WindowsGetStringRawBuffer
+@ stdcall WindowsIsStringEmpty(ptr) combase.WindowsIsStringEmpty
+@ stdcall WindowsPreallocateStringBuffer(long ptr ptr) combase.WindowsPreallocateStringBuffer
+@ stdcall WindowsPromoteStringBuffer(ptr ptr) combase.WindowsPromoteStringBuffer
+@ stub WindowsReplaceString
+@ stdcall WindowsStringHasEmbeddedNull(ptr ptr) combase.WindowsStringHasEmbeddedNull
+@ stdcall WindowsSubstring(ptr long ptr) combase.WindowsSubstring
+@ stdcall WindowsSubstringWithSpecifiedLength(ptr long long ptr) combase.WindowsSubstringWithSpecifiedLength
+@ stdcall WindowsTrimStringEnd(ptr ptr ptr) combase.WindowsTrimStringEnd
+@ stdcall WindowsTrimStringStart(ptr ptr ptr) combase.WindowsTrimStringStart
diff --git a/tools/make_specfiles b/tools/make_specfiles
index 7d4a85bdc3b..545d4363084 100755
--- a/tools/make_specfiles
+++ b/tools/make_specfiles
@@ -445,6 +445,7 @@ my @dll_groups =
   "api-ms-win-core-winrt-registration-l1-1-0",
   "api-ms-win-core-winrt-roparameterizediid-l1-1-0",
   "api-ms-win-core-winrt-string-l1-1-0",
+  "api-ms-win-core-winrt-string-l1-1-1",
  ],
  [
   "uxtheme",