diff --git a/extension/native-messaging-host/src/native-messaging-host.cpp b/extension/native-messaging-host/src/native-messaging-host.cpp
index 4f42ff19..66e67d37 100644
--- a/extension/native-messaging-host/src/native-messaging-host.cpp
+++ b/extension/native-messaging-host/src/native-messaging-host.cpp
@@ -11,17 +11,6 @@
 // https://developer.chrome.com/docs/apps/nativeMessaging/#native-messaging-host-protocol
 // https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Native_messaging#app_side
 
-#if defined(WIN32) || defined(_WIN32) || defined(__WIN32)
-#define APP_EXECUTABLE_FILE_NAME "KeeWeb.exe"
-#elif __APPLE__
-#define APP_EXECUTABLE_FILE_NAME "KeeWeb"
-#else
-#define APP_EXECUTABLE_FILE_NAME "keeweb"
-#endif
-
-constexpr auto kKeeWebLaunchArg = "--browser-extension";
-constexpr auto kLaunchKeeWebIfNotRunning = false;
-
 constexpr auto kSockName = "keeweb-browser.sock";
 
 constexpr std::array kAllowedOrigins = {
@@ -37,9 +26,6 @@ constexpr std::array kAllowedOrigins = {
     std::string_view("chrome-extension://pdffhmdngciaglkoonimfcmckehcpafo/"),
 };
 
-constexpr uint32_t kMaxKeeWebConnectAttempts = 10;
-constexpr uint32_t kKeeWebConnectRetryTimeoutMillis = 500;
-
 struct State {
     uv_stream_t *tty_in = nullptr;
     uv_stream_t *tty_out = nullptr;
@@ -190,17 +176,6 @@ void keeweb_pipe_read_cb(uv_stream_t *, ssize_t nread, const uv_buf_t *buf) {
     }
 }
 
-void keeweb_connect_timer_cb(uv_timer_t *timer) {
-    delete timer;
-    connect_keeweb_pipe();
-}
-
-void set_keeweb_connect_timer() {
-    auto timer_req = new uv_timer_t();
-    uv_timer_init(uv_default_loop(), timer_req);
-    uv_timer_start(timer_req, keeweb_connect_timer_cb, kKeeWebConnectRetryTimeoutMillis, 0);
-}
-
 void keeweb_pipe_connect_cb(uv_connect_t *req, int status) {
     auto pipe = req->handle;
     delete req;
@@ -209,28 +184,6 @@ void keeweb_pipe_connect_cb(uv_connect_t *req, int status) {
         state.keeweb_pipe = pipe;
         uv_read_start(pipe, alloc_buf, keeweb_pipe_read_cb);
         process_keeweb_queue();
-    } else if (state.keeweb_launched) {
-        if (state.keeweb_connect_attempts >= kMaxKeeWebConnectAttempts) {
-            std::cerr << "Cannot connect to KeeWeb: timeout" << std::endl;
-            quit_on_error();
-        } else {
-            set_keeweb_connect_timer();
-        }
-    } else if (kLaunchKeeWebIfNotRunning) {
-        auto child_req = new uv_process_t();
-        const char *args[2]{kKeeWebLaunchArg, nullptr};
-        uv_process_options_t options{.file = APP_EXECUTABLE_FILE_NAME,
-                                     .args = const_cast<char **>(args),
-                                     .flags = UV_PROCESS_DETACHED};
-        auto spawn_error = uv_spawn(uv_default_loop(), child_req, &options);
-        if (spawn_error) {
-            std::cerr << "Cannot spawn KeeWeb: " << uv_err_name(spawn_error) << std::endl;
-            quit_on_error();
-        } else {
-            uv_unref(reinterpret_cast<uv_handle_t *>(&child_req));
-            state.keeweb_launched = true;
-            set_keeweb_connect_timer();
-        }
     } else {
         std::cerr << "Cannot connect to KeeWeb: " << uv_err_name(status) << std::endl;
         quit_on_error();