diff --git a/src/server/input_service.rs b/src/server/input_service.rs
index 3189520be0a..c7f651e9ac7 100644
--- a/src/server/input_service.rs
+++ b/src/server/input_service.rs
@@ -456,13 +456,22 @@ static RECORD_CURSOR_POS_RUNNING: AtomicBool = AtomicBool::new(false);
 // https://github.com/rustdesk/rustdesk/issues/9729
 // We need to do some special handling for macOS when using the legacy mode.
 #[cfg(target_os = "macos")]
-static LAST_KEY_LEGACY_MODE: AtomicBool = AtomicBool::new(false);
-// We use enigo to simulate mouse events. Only the legacy mode uses the key flags.
+static LAST_KEY_LEGACY_MODE: AtomicBool = AtomicBool::new(true);
+// We use enigo to 
+// 1. Simulate mouse events
+// 2. Simulate the legacy mode key events
+// 3. Simulate the functioin key events, like LockScreen
 #[inline]
 #[cfg(target_os = "macos")]
 fn enigo_ignore_flags() -> bool {
     !LAST_KEY_LEGACY_MODE.load(Ordering::SeqCst)
 }
+#[inline]
+#[cfg(target_os = "macos")]
+fn set_last_legacy_mode(v: bool) {
+    LAST_KEY_LEGACY_MODE.store(v, Ordering::SeqCst);
+    ENIGO.lock().unwrap().set_ignore_flags(!v);
+}
 
 pub fn try_start_record_cursor_pos() -> Option<thread::JoinHandle<()>> {
     if RECORD_CURSOR_POS_RUNNING.load(Ordering::SeqCst) {
@@ -1698,17 +1707,19 @@ pub fn handle_key_(evt: &KeyEvent) {
     match evt.mode.enum_value() {
         Ok(KeyboardMode::Map) => {
             #[cfg(target_os = "macos")]
-            LAST_KEY_LEGACY_MODE.store(false, Ordering::SeqCst);
+            set_last_legacy_mode(false);
             map_keyboard_mode(evt);
         }
         Ok(KeyboardMode::Translate) => {
             #[cfg(target_os = "macos")]
-            LAST_KEY_LEGACY_MODE.store(false, Ordering::SeqCst);
+            set_last_legacy_mode(false);
             translate_keyboard_mode(evt);
         }
         _ => {
+            // All key down events are started from here,
+            // so we can reset the flag of last legacy mode here.
             #[cfg(target_os = "macos")]
-            LAST_KEY_LEGACY_MODE.store(true, Ordering::SeqCst);
+            set_last_legacy_mode(true);
             legacy_keyboard_mode(evt);
         }
     }