diff --git a/libs/hbb_common/src/config.rs b/libs/hbb_common/src/config.rs
index e33cf8ebb..ff6de4430 100644
--- a/libs/hbb_common/src/config.rs
+++ b/libs/hbb_common/src/config.rs
@@ -2113,6 +2113,7 @@ pub mod keys {
     pub const OPTION_HIDE_PROXY_SETTINGS: &str = "hide-proxy-settings";
     pub const OPTION_HIDE_USERNAME_ON_CARD: &str = "hide-username-on-card";
     pub const OPTION_HIDE_HELP_CARDS: &str = "hide-help-cards";
+    pub const OPTION_DEFAULT_CONNECT_PASSWORD: &str = "default-connect-password";
 
     // flutter local options
     pub const OPTION_FLUTTER_REMOTE_MENUBAR_STATE: &str = "remoteMenubarState";
@@ -2254,6 +2255,7 @@ pub mod keys {
         OPTION_HIDE_PROXY_SETTINGS,
         OPTION_HIDE_USERNAME_ON_CARD,
         OPTION_HIDE_HELP_CARDS,
+        OPTION_DEFAULT_CONNECT_PASSWORD,
     ];
 }
 
diff --git a/src/client.rs b/src/client.rs
index 163aae1a1..1014bc23b 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -543,7 +543,7 @@ impl Client {
         conn: &mut Stream,
     ) -> ResultType<Option<Vec<u8>>> {
         let rs_pk = get_rs_pk(if key.is_empty() {
-            hbb_common::config::RS_PUB_KEY
+            config::RS_PUB_KEY
         } else {
             key
         });
@@ -2625,7 +2625,7 @@ struct LoginErrorMsgBox {
 
 lazy_static::lazy_static! {
     static ref LOGIN_ERROR_MAP: Arc<HashMap<&'static str, LoginErrorMsgBox>> = {
-        use hbb_common::config::LINK_HEADLESS_LINUX_SUPPORT;
+        use config::LINK_HEADLESS_LINUX_SUPPORT;
         let map = HashMap::from([(LOGIN_SCREEN_WAYLAND, LoginErrorMsgBox{
             msgtype: "error",
             title: "Login Error",
@@ -2791,6 +2791,20 @@ pub async fn handle_hash(
     if password.is_empty() {
         try_get_password_from_personal_ab(lc.clone(), &mut password);
     }
+
+    if password.is_empty() {
+        let p =
+            crate::ui_interface::get_buildin_option(config::keys::OPTION_DEFAULT_CONNECT_PASSWORD);
+        if !p.is_empty() {
+            let mut hasher = Sha256::new();
+            hasher.update(p.clone());
+            hasher.update(&hash.salt);
+            let res = hasher.finalize();
+            password = res[..].into();
+            lc.write().unwrap().password_source = PasswordSource::SharedAb(p); // reuse SharedAb here
+        }
+    }
+
     lc.write().unwrap().password = password.clone();
     let password = if password.is_empty() {
         // login without password, the remote side can click accept
@@ -2813,7 +2827,7 @@ pub async fn handle_hash(
 #[inline]
 fn try_get_password_from_personal_ab(lc: Arc<RwLock<LoginConfigHandler>>, password: &mut Vec<u8>) {
     let access_token = LocalConfig::get_option("access_token");
-    let ab = hbb_common::config::Ab::load();
+    let ab = config::Ab::load();
     if !access_token.is_empty() && access_token == ab.access_token {
         let id = lc.read().unwrap().id.clone();
         if let Some(ab) = ab.ab_entries.iter().find(|a| a.personal()) {