diff --git a/libs/hbb_common b/libs/hbb_common
index 4d5b935..20bea85 160000
--- a/libs/hbb_common
+++ b/libs/hbb_common
@@ -1 +1 @@
-Subproject commit 4d5b935f16abe33e106b13f30877edb2960f53e9
+Subproject commit 20bea85903acbd701aed45d195e9206f2ea09edf
diff --git a/src/main.rs b/src/main.rs
index 96e0376..888fa11 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -16,6 +16,7 @@ fn main() -> ResultType<()> {
         -R, --rendezvous-servers=[HOSTS] 'Sets rendezvous servers, seperated by colon'
         -u, --software-url=[URL] 'Sets download url of RustDesk software of newest version'
         -r, --relay-servers=[HOST] 'Sets the default relay servers, seperated by colon'
+        -C, --change-id=[BOOL(default=Y)] 'Sets if support to change id'
         -k, --key=[KEY] 'Only allow the client with the same key'",
         DEFAULT_PORT,
     );
@@ -50,6 +51,7 @@ fn main() -> ResultType<()> {
         .map(|x| x.to_owned())
         .collect();
     let serial: i32 = get_arg("serial", "").parse().unwrap_or(0);
+    let id_change_support: bool = get_arg("change-id", "Y").to_uppercase() == "Y";
     let rendezvous_servers: Vec<String> = get_arg("rendezvous-servers", "")
         .split(",")
         .filter(|x| !x.is_empty() && test_if_valid_server(x, "rendezvous-server").is_ok())
@@ -69,6 +71,7 @@ fn main() -> ResultType<()> {
         get_arg("software-url", ""),
         &get_arg("key", ""),
         stop,
+        id_change_support,
     )?;
     Ok(())
 }
diff --git a/src/rendezvous_server.rs b/src/rendezvous_server.rs
index 79ed121..2908475 100644
--- a/src/rendezvous_server.rs
+++ b/src/rendezvous_server.rs
@@ -164,6 +164,7 @@ impl RendezvousServer {
         software_url: String,
         key: &str,
         stop: Arc<Mutex<bool>>,
+        id_change_support: bool,
     ) -> ResultType<()> {
         if !key.is_empty() {
             log::info!("Key: {}", key);
@@ -171,6 +172,7 @@ impl RendezvousServer {
         log::info!("Listening on tcp/udp {}", addr);
         log::info!("Listening on tcp {}, extra port for NAT test", addr2);
         log::info!("relay-servers={:?}", relay_servers);
+        log::info!("change-id={:?}", id_change_support);
         let mut socket = FramedSocket::new(addr).await?;
         let (tx, mut rx) = mpsc::unbounded_channel::<(RendezvousMessage, SocketAddr)>();
         let version = hbb_common::get_version_from_url(&software_url);
@@ -202,6 +204,7 @@ impl RendezvousServer {
                 &mut socket,
                 key,
                 stop.clone(),
+                id_change_support,
             )
             .await;
         }
@@ -215,6 +218,7 @@ impl RendezvousServer {
         socket: &mut FramedSocket,
         key: &str,
         stop: Arc<Mutex<bool>>,
+        id_change_support: bool,
     ) {
         let mut timer = interval(Duration::from_millis(100));
         loop {
@@ -326,7 +330,9 @@ impl RendezvousServer {
                                             break;
                                         }
                                         let mut res = register_pk_response::Result::OK;
-                                        if let Some(peer) = rs.pm.get(&rk.id).await {
+                                        if !id_change_support {
+                                            res = register_pk_response::Result::NOT_SUPPORT;
+                                        } else if let Some(peer) = rs.pm.get(&rk.id).await {
                                             if peer.uuid != rk.uuid {
                                                 res = register_pk_response::Result::ID_EXISTS;
                                             }