diff --git a/apps/desktop-shell/scripts/check-config.mjs b/apps/desktop-shell/scripts/check-config.mjs
index bdd7db4ec..a9bda0f42 100644
--- a/apps/desktop-shell/scripts/check-config.mjs
+++ b/apps/desktop-shell/scripts/check-config.mjs
@@ -1889,10 +1889,13 @@ for (const snippet of [
   '"external url unavailable"',
   'external_url_unavailable_response_is_stable',
   'open_desktop_host_bridge_native_page',
+  'native_page_unavailable_response',
   'desktop_native_page_url_from_request',
   'normalize_native_page_url',
   'window.navigate(url)',
   'desktop_native_page_request_accepts_only_same_origin_h5_routes',
+  '"native page unavailable"',
+  'native_page_unavailable_response_is_stable',
   'reload_desktop_host_bridge_webview',
   'window.reload()',
 ]) {
diff --git a/apps/desktop-shell/src-tauri/src/host_bridge/navigation.rs b/apps/desktop-shell/src-tauri/src/host_bridge/navigation.rs
index 2472d1048..bfdc5c52c 100644
--- a/apps/desktop-shell/src-tauri/src/host_bridge/navigation.rs
+++ b/apps/desktop-shell/src-tauri/src/host_bridge/navigation.rs
@@ -68,12 +68,16 @@ pub(crate) fn open_desktop_host_bridge_native_page(
     match app.get_webview_window("main") {
         Some(window) => match window.navigate(url) {
             Ok(()) => ok(request.id.clone(), json!(true)),
-            Err(error) => failed(request.id.clone(), "host_error", error.to_string()),
+            Err(_) => native_page_unavailable_response(request),
         },
-        None => failed(request.id.clone(), "host_error", "main window not found"),
+        None => native_page_unavailable_response(request),
     }
 }
 
+fn native_page_unavailable_response(request: &HostBridgeRequest) -> HostBridgeResponse {
+    failed(request.id.clone(), "host_error", "native page unavailable")
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -164,6 +168,16 @@ mod tests {
             );
         }
     }
+
+    #[test]
+    fn native_page_unavailable_response_is_stable() {
+        let response = native_page_unavailable_response(&request("navigation.openNativePage"));
+
+        assert!(!response.ok);
+        let error = response.error.expect("native page error");
+        assert_eq!(error.code, "host_error");
+        assert_eq!(error.message, "native page unavailable");
+    }
 }
 
 pub(crate) fn reload_desktop_host_bridge_webview(