diff --git a/macos.py b/macos.py
index 8bc602a..d26ff7d 100644
--- a/macos.py
+++ b/macos.py
@@ -185,7 +185,7 @@ def _run_proxy_thread() -> None:
         loop.run_until_complete(_run(stop_event=stop_ev))
     except Exception as exc:
         log.error("Proxy thread crashed: %s", exc)
-        msg = diagnose_listen_error(exc)
+        msg, _ = diagnose_listen_error(exc)
         if msg:
             _show_error(msg)
     finally:
diff --git a/utils/diagnostics.py b/utils/diagnostics.py
index 4301496..76caeba 100644
--- a/utils/diagnostics.py
+++ b/utils/diagnostics.py
@@ -1,8 +1,9 @@
 from __future__ import annotations
 
 import errno
+import webbrowser
 
-from typing import Optional
+from typing import Optional, Tuple, Callable
 
 
 MSG_PORT_BUSY = (
@@ -23,6 +24,7 @@ MSG_PERMISSION = (
 MSG_BAD_ADDRESS = (
     "Не удалось запустить прокси:\n"
     "Некорректный или недоступный адрес для прослушивания.\n\n"
+    "Проверьте решение по открывшейся в браузере ссылке.\n"
     "Проверьте host и порт в настройках прокси и перезапустите."
 )
 
@@ -33,7 +35,7 @@ _WSA_EADDRINUSE = 10048
 _WSA_EADDRNOTAVAIL = 10049
 
 
-def diagnose_listen_error(exc: BaseException) -> Optional[str]:
+def diagnose_listen_error(exc: BaseException) -> Tuple[Optional[str], Optional[Callable]]:
     """Map a listen-socket bind failure to a user-facing message.
 
     Returns None when the exception is not a recognizable bind failure,
@@ -46,10 +48,10 @@ def diagnose_listen_error(exc: BaseException) -> Optional[str]:
     winerror = getattr(exc, "winerror", None)
 
     if err == errno.EADDRINUSE or winerror == _WSA_EADDRINUSE:
-        return MSG_PORT_BUSY
+        return MSG_PORT_BUSY, None
     if err == errno.EACCES or winerror == _WSA_EACCES:
-        return MSG_PERMISSION
+        return MSG_PERMISSION, None
     if (winerror in (_WSA_EFAULT, _WSA_EADDRNOTAVAIL)
             or err in (errno.EADDRNOTAVAIL, errno.EFAULT)):
-        return MSG_BAD_ADDRESS
-    return None
+        return MSG_BAD_ADDRESS, lambda : webbrowser.open("https://github.com/Flowseal/tg-ws-proxy/issues/903#issuecomment-4726752103")
+    return None, None
diff --git a/utils/tray_common.py b/utils/tray_common.py
index 2a78f92..9739b81 100644
--- a/utils/tray_common.py
+++ b/utils/tray_common.py
@@ -228,7 +228,7 @@ _proxy_thread: Optional[threading.Thread] = None
 _async_stop: Optional[Tuple[asyncio.AbstractEventLoop, asyncio.Event]] = None
 
 
-def _run_proxy_thread(on_port_busy: Callable[[str], None]) -> None:
+def _run_proxy_thread(show_error: Callable[[str], None]) -> None:
     global _async_stop
 
     loop = asyncio.new_event_loop()
@@ -240,9 +240,11 @@ def _run_proxy_thread(on_port_busy: Callable[[str], None]) -> None:
         loop.run_until_complete(_run(stop_event=stop_ev))
     except Exception as exc:
         log.error("Proxy thread crashed: %s", repr(exc))
-        msg = diagnose_listen_error(exc)
+        msg, diagnose_called = diagnose_listen_error(exc)
         if msg:
-            on_port_busy(msg)
+            show_error(msg)
+        if diagnose_called:
+            diagnose_called()
     finally:
         loop.close()
         _async_stop = None