diff --git a/src/core_main.rs b/src/core_main.rs
index 2121f46cd..e261ed5b2 100644
--- a/src/core_main.rs
+++ b/src/core_main.rs
@@ -257,6 +257,45 @@ pub fn core_main() -> Option<Vec<String>> {
                 my_println!("Installation and administrative privileges required!");
             }
             return None;
+        } else if args[0] == "--set-id" {
+            if args.len() == 2 {
+                if crate::platform::is_installed()
+                    && crate::platform::check_super_user_permission().unwrap_or_default()
+                {
+                    let old_id = crate::ipc::get_id();
+                    let mut res = crate::ui_interface::change_id_shared(args[1].to_owned(), old_id);
+                    if res.is_empty() {
+                        res = "Done!".to_owned();
+                    }
+                    my_println!("{}", res);
+                } else {
+                    my_println!("Installation and administrative privileges required!");
+                }
+            }
+            return None;
+        } else if args[0] == "--config" {
+            if args.len() == 2 {
+                if crate::platform::is_installed()
+                    && crate::platform::check_super_user_permission().unwrap_or_default()
+                {
+                    // arg: starting with `host=`, e.g. `host=127.0.0.1,api=https://test.com,key=asfs`,
+                    // or the filename (without ext) used in renaming exe.
+                    let name = format!("{}.exe", args[1]);
+                    if let Ok(lic) = crate::license::get_license_from_string(&name) {
+                        if !lic.host.is_empty() {
+                            crate::ui_interface::set_option("key".into(), lic.key);
+                            crate::ui_interface::set_option(
+                                "custom-rendezvous-server".into(),
+                                lic.host,
+                            );
+                            crate::ui_interface::set_option("api-server".into(), lic.api);
+                        }
+                    }
+                } else {
+                    my_println!("Installation and administrative privileges required!");
+                }
+            }
+            return None;
         } else if args[0] == "--check-hwcodec-config" {
             #[cfg(feature = "hwcodec")]
             scrap::hwcodec::check_config();
diff --git a/src/license.rs b/src/license.rs
index 1b8742533..59d11f4d8 100644
--- a/src/license.rs
+++ b/src/license.rs
@@ -53,20 +53,23 @@ pub fn get_license_from_string(s: &str) -> ResultType<License> {
         let strs: Vec<&str> = stripped.split(",").collect();
         let mut host = "";
         let mut key = "";
+        let mut api = "";
         let strs_iter = strs.iter();
         for el in strs_iter {
             if el.starts_with("host=") {
                 host = &el[5..el.len()];
             }
-
             if el.starts_with("key=") {
                 key = &el[4..el.len()];
             }
+            if el.starts_with("api=") {
+                api = &el[4..el.len()];
+            }
         }
         return Ok(License {
             host: host.to_owned(),
             key: key.to_owned(),
-            api: "".to_owned(),
+            api: api.to_owned(),
         });
     } else {
         let strs = if s.contains("-licensed-") {
@@ -110,12 +113,14 @@ mod test {
         );
         // key in these tests is "foobar.,2" base64 encoded
         assert_eq!(
-            get_license_from_string("rustdesk-host=server.example.net,key=Zm9vYmFyLiwyCg==.exe")
-                .unwrap(),
+            get_license_from_string(
+                "rustdesk-host=server.example.net,api=abc,key=Zm9vYmFyLiwyCg==.exe"
+            )
+            .unwrap(),
             License {
                 host: "server.example.net".to_owned(),
                 key: "Zm9vYmFyLiwyCg==".to_owned(),
-                api: "".to_owned(),
+                api: "abc".to_owned(),
             }
         );
         assert_eq!(
diff --git a/src/ui_interface.rs b/src/ui_interface.rs
index 9ea367486..b10fad206 100644
--- a/src/ui_interface.rs
+++ b/src/ui_interface.rs
@@ -1027,8 +1027,10 @@ const UNKNOWN_ERROR: &'static str = "Unknown error";
 
 #[inline]
 #[tokio::main(flavor = "current_thread")]
-pub async fn change_id_shared(id: String, old_id: String) {
-    *ASYNC_JOB_STATUS.lock().unwrap() = change_id_shared_(id, old_id).await.to_owned();
+pub async fn change_id_shared(id: String, old_id: String) -> String {
+    let res = change_id_shared_(id, old_id).await.to_owned();
+    *ASYNC_JOB_STATUS.lock().unwrap() = res.clone();
+    res
 }
 
 pub async fn change_id_shared_(id: String, old_id: String) -> &'static str {