diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index 4c4bdfd62c..03edbb9b39 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -2166,7 +2166,12 @@ void GUI_App::init_networking_callbacks()
                     obj->is_tunnel_mqtt = tunnel;
                     obj->command_request_push_all(true);
                     obj->command_get_version();
-                    obj->erase_user_access_code();
+                    // Do NOT erase user code. Erasing will cause has_access_right to be false
+                    // whenever the device slot isn't populated yet (e.g. LAN reselect after logout).
+                    // This filters this printer out of get_my_machine_list, silently dropping every status message
+                    // AND the get_access_code reply that would refill the code, leaving a permanently
+                    // dead "connected but no live data" state.
+                    // obj -> set_user_access_code("");
                     obj->command_get_access_code();
                     if (m_agent)
                         m_agent->install_device_cert(obj->get_dev_id(), obj->is_lan_mode_printer());