diff --git a/configure b/configure
index 03a458baecd..bc23f9c4ff8 100755
--- a/configure
+++ b/configure
@@ -1066,6 +1066,7 @@ enable_api_ms_win_perf_legacy_l1_1_0
 enable_api_ms_win_power_base_l1_1_0
 enable_api_ms_win_power_setting_l1_1_0
 enable_api_ms_win_rtcore_ntuser_private_l1_1_0
+enable_api_ms_win_rtcore_ntuser_window_l1_1_0
 enable_api_ms_win_security_activedirectoryclient_l1_1_0
 enable_api_ms_win_security_audit_l1_1_1
 enable_api_ms_win_security_base_l1_1_0
@@ -18349,6 +18350,7 @@ wine_fn_config_makefile dlls/api-ms-win-perf-legacy-l1-1-0 enable_api_ms_win_per
 wine_fn_config_makefile dlls/api-ms-win-power-base-l1-1-0 enable_api_ms_win_power_base_l1_1_0
 wine_fn_config_makefile dlls/api-ms-win-power-setting-l1-1-0 enable_api_ms_win_power_setting_l1_1_0
 wine_fn_config_makefile dlls/api-ms-win-rtcore-ntuser-private-l1-1-0 enable_api_ms_win_rtcore_ntuser_private_l1_1_0
+wine_fn_config_makefile dlls/api-ms-win-rtcore-ntuser-window-l1-1-0 enable_api_ms_win_rtcore_ntuser_window_l1_1_0
 wine_fn_config_makefile dlls/api-ms-win-security-activedirectoryclient-l1-1-0 enable_api_ms_win_security_activedirectoryclient_l1_1_0
 wine_fn_config_makefile dlls/api-ms-win-security-audit-l1-1-1 enable_api_ms_win_security_audit_l1_1_1
 wine_fn_config_makefile dlls/api-ms-win-security-base-l1-1-0 enable_api_ms_win_security_base_l1_1_0
diff --git a/configure.ac b/configure.ac
index 35cba6ff8cc..4dd22a96b4f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2998,6 +2998,7 @@ WINE_CONFIG_MAKEFILE(dlls/api-ms-win-perf-legacy-l1-1-0)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-power-base-l1-1-0)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-power-setting-l1-1-0)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-rtcore-ntuser-private-l1-1-0)
+WINE_CONFIG_MAKEFILE(dlls/api-ms-win-rtcore-ntuser-window-l1-1-0)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-security-activedirectoryclient-l1-1-0)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-security-audit-l1-1-1)
 WINE_CONFIG_MAKEFILE(dlls/api-ms-win-security-base-l1-1-0)
diff --git a/dlls/api-ms-win-rtcore-ntuser-window-l1-1-0/Makefile.in b/dlls/api-ms-win-rtcore-ntuser-window-l1-1-0/Makefile.in
new file mode 100644
index 00000000000..9641c2a6dd1
--- /dev/null
+++ b/dlls/api-ms-win-rtcore-ntuser-window-l1-1-0/Makefile.in
@@ -0,0 +1 @@
+MODULE    = api-ms-win-rtcore-ntuser-window-l1-1-0.dll
diff --git a/dlls/api-ms-win-rtcore-ntuser-window-l1-1-0/api-ms-win-rtcore-ntuser-window-l1-1-0.spec b/dlls/api-ms-win-rtcore-ntuser-window-l1-1-0/api-ms-win-rtcore-ntuser-window-l1-1-0.spec
new file mode 100644
index 00000000000..c859189ef84
--- /dev/null
+++ b/dlls/api-ms-win-rtcore-ntuser-window-l1-1-0/api-ms-win-rtcore-ntuser-window-l1-1-0.spec
@@ -0,0 +1,81 @@
+@ stdcall AllowSetForegroundWindow(long) user32.AllowSetForegroundWindow
+@ stdcall BeginDeferWindowPos(long) user32.BeginDeferWindowPos
+@ stdcall CallWindowProcW(ptr long long long long) user32.CallWindowProcW
+@ stdcall ChildWindowFromPoint(long int64) user32.ChildWindowFromPoint
+@ stdcall ChildWindowFromPointEx(long int64 long) user32.ChildWindowFromPointEx
+@ stdcall ClientToScreen(long ptr) user32.ClientToScreen
+@ stdcall CreateWindowExW(long wstr wstr long long long long long long long long ptr) user32.CreateWindowExW
+@ stdcall DeferWindowPos(long long long long long long long long) user32.DeferWindowPos
+@ stdcall DefWindowProcW(long long long long) user32.DefWindowProcW
+@ stdcall DestroyWindow(long) user32.DestroyWindow
+@ stdcall DispatchMessageW(ptr) user32.DispatchMessageW
+@ stdcall EnableWindow(long long) user32.EnableWindow
+@ stdcall EndDeferWindowPos(long) user32.EndDeferWindowPos
+@ stdcall EnumChildWindows(long ptr long) user32.EnumChildWindows
+@ stdcall EnumPropsExW(long ptr long) user32.EnumPropsExW
+@ stdcall EnumPropsW(long ptr) user32.EnumPropsW
+@ stdcall EnumWindows(ptr long) user32.EnumWindows
+@ stdcall FindWindowExW(long long wstr wstr) user32.FindWindowExW
+@ stdcall FindWindowW(wstr wstr) user32.FindWindowW
+@ stdcall GetActiveWindow() user32.GetActiveWindow
+@ stdcall GetAncestor(long long) user32.GetAncestor
+@ stdcall GetClassInfoExW(long wstr ptr) user32.GetClassInfoExW
+@ stdcall GetClassInfoW(long wstr ptr) user32.GetClassInfoW
+@ stdcall GetClassNameW(long ptr long) user32.GetClassNameW
+@ stdcall GetClientRect(long long) user32.GetClientRect
+@ stdcall GetCursorPos(ptr) user32.GetCursorPos
+@ stdcall GetDesktopWindow() user32.GetDesktopWindow
+@ stdcall GetFocus() user32.GetFocus
+@ stdcall GetForegroundWindow() user32.GetForegroundWindow
+@ stdcall GetMessageExtraInfo() user32.GetMessageExtraInfo
+@ stdcall GetMessagePos() user32.GetMessagePos
+@ stdcall GetMessageTime() user32.GetMessageTime
+@ stdcall GetMessageW(ptr long long long) user32.GetMessageW
+@ stdcall GetParent(long) user32.GetParent
+@ stdcall GetPropW(long wstr) user32.GetPropW
+@ stdcall GetQueueStatus(long) user32.GetQueueStatus
+@ stdcall GetTopWindow(long) user32.GetTopWindow
+@ stdcall GetWindow(long long) user32.GetWindow
+@ stdcall GetWindowLongA(long long) user32.GetWindowLongA
+@ stdcall GetWindowLongW(long long) user32.GetWindowLongW
+@ stdcall GetWindowRect(long ptr) user32.GetWindowRect
+@ stdcall GetWindowTextW(long ptr long) user32.GetWindowTextW
+@ stdcall GetWindowThreadProcessId(long ptr) user32.GetWindowThreadProcessId
+@ stdcall InSendMessage() user32.InSendMessage
+@ stdcall InSendMessageEx(ptr) user32.InSendMessageEx
+@ stdcall IsChild(long long) user32.IsChild
+@ stdcall IsWindow(long) user32.IsWindow
+@ stdcall IsWindowEnabled(long) user32.IsWindowEnabled
+@ stdcall IsWindowVisible(long) user32.IsWindowVisible
+@ stdcall KillTimer(long long) user32.KillTimer
+@ stdcall MoveWindow(long long long long long long) user32.MoveWindow
+@ stdcall PeekMessageW(ptr long long long long) user32.PeekMessageW
+@ stdcall PostMessageW(long long long long) user32.PostMessageW
+@ stdcall PostQuitMessage(long) user32.PostQuitMessage
+@ stdcall PostThreadMessageW(long long long long) user32.PostThreadMessageW
+@ stdcall RegisterClassExW(ptr) user32.RegisterClassExW
+@ stdcall RegisterClassW(ptr) user32.RegisterClassW
+@ stdcall RegisterWindowMessageW(wstr) user32.RegisterWindowMessageW
+@ stdcall RemovePropW(long wstr) user32.RemovePropW
+@ stdcall ScreenToClient(long ptr) user32.ScreenToClient
+@ stdcall SendMessageCallbackW(long long long long ptr long) user32.SendMessageCallbackW
+@ stdcall SendMessageTimeoutW(long long long long long long ptr) user32.SendMessageTimeoutW
+@ stdcall SendMessageW(long long long long) user32.SendMessageW
+@ stdcall SendNotifyMessageW(long long long long) user32.SendNotifyMessageW
+@ stdcall SetActiveWindow(long) user32.SetActiveWindow
+@ stdcall SetCursorPos(long long) user32.SetCursorPos
+@ stdcall SetFocus(long) user32.SetFocus
+@ stdcall SetForegroundWindow(long) user32.SetForegroundWindow
+@ stdcall SetMessageExtraInfo(long) user32.SetMessageExtraInfo
+@ stdcall SetParent(long long) user32.SetParent
+@ stdcall SetPropW(long wstr long) user32.SetPropW
+@ stdcall SetTimer(long long long ptr) user32.SetTimer
+@ stdcall SetWindowLongA(long long long) user32.SetWindowLongA
+@ stdcall SetWindowLongW(long long long) user32.SetWindowLongW
+@ stdcall SetWindowPos(long long long long long long long) user32.SetWindowPos
+@ stdcall SetWindowTextW(long wstr) user32.SetWindowTextW
+@ stdcall ShowWindow(long long) user32.ShowWindow
+@ stdcall TranslateMessage(ptr) user32.TranslateMessage
+@ stdcall UnregisterClassW(wstr long) user32.UnregisterClassW
+@ stdcall WaitMessage() user32.WaitMessage
+@ stdcall WindowFromPoint(int64) user32.WindowFromPoint
diff --git a/tools/make_specfiles b/tools/make_specfiles
index a0f9e363924..3aa07702263 100755
--- a/tools/make_specfiles
+++ b/tools/make_specfiles
@@ -346,6 +346,7 @@ my @dll_groups =
   "api-ms-win-downlevel-user32-l1-1-0",
   "api-ms-win-ntuser-dc-access-l1-1-0",
   "api-ms-win-rtcore-ntuser-private-l1-1-0",
+  "api-ms-win-rtcore-ntuser-window-l1-1-0",
   "ext-ms-win-ntuser-message-l1-1-1",
   "ext-ms-win-ntuser-private-l1-1-1",
   "ext-ms-win-ntuser-rectangle-ext-l1-1-0",