diff --git a/src/platform/windows.rs b/src/platform/windows.rs
index 1a0ce6711..feadffb2c 100644
--- a/src/platform/windows.rs
+++ b/src/platform/windows.rs
@@ -1067,12 +1067,10 @@ if exist \"{tmp_path}\\{app_name} Tray.lnk\" del /f /q \"{tmp_path}\\{app_name}
     };
 
     // potential bug here: if run_cmd cancelled, but config file is changed.
-    if let Ok(lic) = crate::platform::windows::get_license_from_exe_name() {
-        if !lic.host.is_empty() {
-            Config::set_option("key".into(), lic.key);
-            Config::set_option("custom-rendezvous-server".into(), lic.host);
-            Config::set_option("api-server".into(), lic.api);
-        }
+    if let Some(lic) = get_license() {
+        Config::set_option("key".into(), lic.key);
+        Config::set_option("custom-rendezvous-server".into(), lic.host);
+        Config::set_option("api-server".into(), lic.api);
     }
 
     let cmds = format!(
@@ -2342,3 +2340,19 @@ pub fn alloc_console() {
         alloc_console_and_redirect();
     }
 }
+
+fn get_license() -> Option<License> {
+    let mut lic: License = Default::default();
+    if let Ok(tmp) = get_license_from_exe_name() {
+        lic = tmp;
+    } else {
+        // for back compatibility from migrating from <= 1.2.1 to 1.2.2
+        lic.key = get_reg("Key");
+        lic.host = get_reg("Host");
+        lic.api = get_reg("Api");
+    }
+    if lic.key.is_empty() || lic.host.is_empty() {
+        return None;
+    }
+    Some(lic)
+}