diff --git a/src/common.rs b/src/common.rs
index 0b475805d..489f5c165 100644
--- a/src/common.rs
+++ b/src/common.rs
@@ -799,3 +799,22 @@ pub fn decode64<T: AsRef<[u8]>>(input: T) -> Result<Vec<u8>, base64::DecodeError
     #[allow(deprecated)]
     base64::decode(input)
 }
+
+pub async fn get_key(sync: bool) -> String {
+    let mut key = if sync {
+        Config::get_option("key")
+    } else {
+        let mut options = crate::ipc::get_options_async().await;
+        options.remove("key").unwrap_or_default()
+    };
+    if key.is_empty() {
+        #[cfg(windows)]
+        if let Some(lic) = windows::get_license() {
+            return lic.key;
+        }
+    }
+    if key.is_empty() && !option_env!("RENDEZVOUS_SERVER").unwrap_or("").is_empty() {
+        key = config::RS_PUB_KEY.to_owned();
+    }
+    key
+}
diff --git a/src/platform/mod.rs b/src/platform/mod.rs
index f2b609d3f..0aa23e7e3 100644
--- a/src/platform/mod.rs
+++ b/src/platform/mod.rs
@@ -22,14 +22,6 @@ use hbb_common::{message_proto::CursorData, ResultType};
 #[cfg(not(target_os = "macos"))]
 const SERVICE_INTERVAL: u64 = 300;
 
-pub fn get_license_key() -> String {
-    #[cfg(windows)]
-    if let Some(lic) = windows::get_license() {
-        return lic.key;
-    }
-    Default::default()
-}
-
 pub fn is_xfce() -> bool {
     #[cfg(target_os = "linux")]
     {
diff --git a/src/server.rs b/src/server.rs
index 7807c4fac..1f174ef03 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -262,10 +262,7 @@ async fn create_relay_connection_(
     )
     .await?;
     let mut msg_out = RendezvousMessage::new();
-    let mut licence_key = Config::get_option("key");
-    if licence_key.is_empty() {
-        licence_key = crate::platform::get_license_key();
-    }
+    let licence_key = crate::get_key(true).await;
     msg_out.set_request_relay(RequestRelay {
         licence_key,
         uuid,
diff --git a/src/ui_session_interface.rs b/src/ui_session_interface.rs
index 5bf065a0b..2fd095347 100644
--- a/src/ui_session_interface.rs
+++ b/src/ui_session_interface.rs
@@ -13,7 +13,7 @@ use bytes::Bytes;
 use rdev::{Event, EventType::*};
 use uuid::Uuid;
 
-use hbb_common::config::{Config, LocalConfig, PeerConfig, RS_PUB_KEY};
+use hbb_common::config::{Config, LocalConfig, PeerConfig};
 use hbb_common::rendezvous_proto::ConnType;
 use hbb_common::tokio::{self, sync::mpsc};
 use hbb_common::{allow_err, message_proto::*};
@@ -1055,15 +1055,8 @@ impl<T: InvokeUiSession> Session<T> {
 pub async fn io_loop<T: InvokeUiSession>(handler: Session<T>) {
     let (sender, mut receiver) = mpsc::unbounded_channel::<Data>();
     *handler.sender.write().unwrap() = Some(sender.clone());
-    let mut options = crate::ipc::get_options_async().await;
-    let mut key = options.remove("key").unwrap_or("".to_owned());
     let token = LocalConfig::get_option("access_token");
-    if key.is_empty() {
-        key = crate::platform::get_license_key();
-    }
-    if key.is_empty() && !option_env!("RENDEZVOUS_SERVER").unwrap_or("").is_empty() {
-        key = RS_PUB_KEY.to_owned();
-    }
+    let key = crate::get_key(false).await;
     #[cfg(not(any(target_os = "android", target_os = "ios")))]
     if handler.is_port_forward() {
         if handler.is_rdp() {