diff --git a/internal/uidriver/glfw/ui_windows.go b/internal/uidriver/glfw/ui_windows.go
index b15c8df6e..e3f044b8c 100644
--- a/internal/uidriver/glfw/ui_windows.go
+++ b/internal/uidriver/glfw/ui_windows.go
@@ -44,9 +44,11 @@ type monitorInfo struct {
 
 var (
 	// user32 is defined at hideconsole_windows.go
-	procGetSystemMetrics  = user32.NewProc("GetSystemMetrics")
-	procMonitorFromWindow = user32.NewProc("MonitorFromWindow")
-	procGetMonitorInfoW   = user32.NewProc("GetMonitorInfoW")
+	procGetSystemMetrics    = user32.NewProc("GetSystemMetrics")
+	procGetActiveWindow     = user32.NewProc("GetActiveWindow")
+	procGetForegroundWindow = user32.NewProc("GetForegroundWindow")
+	procMonitorFromWindow   = user32.NewProc("MonitorFromWindow")
+	procGetMonitorInfoW     = user32.NewProc("GetMonitorInfoW")
 )
 
 func getSystemMetrics(nIndex int) (int, error) {
@@ -57,6 +59,22 @@ func getSystemMetrics(nIndex int) (int, error) {
 	return int(r), nil
 }
 
+func getActiveWindow() (uintptr, error) {
+	r, _, e := procGetActiveWindow.Call()
+	if e != nil && e.(windows.Errno) != 0 {
+		return 0, fmt.Errorf("ui: GetActiveWindow failed: error code: %d", e)
+	}
+	return r, nil
+}
+
+func getForegroundWindow() (uintptr, error) {
+	r, _, e := procGetForegroundWindow.Call()
+	if e != nil && e.(windows.Errno) != 0 {
+		return 0, fmt.Errorf("ui: GetForegroundWindow failed: error code: %d", e)
+	}
+	return r, nil
+}
+
 func monitorFromWindow(hwnd uintptr, dwFlags uint32) (uintptr, error) {
 	r, _, e := procMonitorFromWindow.Call(hwnd, uintptr(dwFlags))
 	if e != nil && e.(windows.Errno) != 0 {
@@ -116,11 +134,30 @@ func (u *UserInterface) adjustWindowPosition(x, y int) (int, int) {
 	return x, y
 }
 
-func currentMonitorByOS(w *glfw.Window) *glfw.Monitor {
+func currentMonitorByOS(_ *glfw.Window) *glfw.Monitor {
+	// TODO: Should we return nil here?
+	w, err := getActiveWindow()
+	if err != nil {
+		panic(err)
+	}
+
+	if w == 0 {
+		// The active window doesn't exist when launching, or the application is runnable on unfocused.
+		// Get the foreground window, that is common among multiple processes.
+		w, err = getForegroundWindow()
+		if err != nil {
+			panic(err)
+		}
+		if w == 0 {
+			// GetForegroundWindow can return null according to the document.
+			return nil
+		}
+	}
+
 	// Get the current monitor by the window handle instead of the window position. It is because the window
 	// position is not relaiable in some cases e.g. when the window is put across multiple monitors.
 
-	m, err := monitorFromWindow(w.GetWin32Window(), monitorDefaultToNearest)
+	m, err := monitorFromWindow(w, monitorDefaultToNearest)
 	if err != nil {
 		// monitorFromWindow can return error on Wine. Ignore this.
 		return nil