diff --git a/homeassistant/components/roborock/__init__.py b/homeassistant/components/roborock/__init__.py
index 5d67233f7bc..a63fa0e65c1 100644
--- a/homeassistant/components/roborock/__init__.py
+++ b/homeassistant/components/roborock/__init__.py
@@ -18,6 +18,7 @@ from roborock.data import UserData
 from roborock.devices.device import RoborockDevice
 from roborock.devices.device_manager import UserParams, create_device_manager
 from roborock.map.map_parser import MapParserConfig
+from roborock.mqtt.session import MqttSessionUnauthorized
 
 from homeassistant.const import CONF_USERNAME, EVENT_HOMEASSISTANT_STOP
 from homeassistant.core import Event, HomeAssistant
@@ -92,6 +93,11 @@ async def async_setup_entry(hass: HomeAssistant, entry: RoborockConfigEntry) ->
             translation_domain=DOMAIN,
             translation_key="no_user_agreement",
         ) from err
+    except MqttSessionUnauthorized as err:
+        raise ConfigEntryAuthFailed(
+            translation_domain=DOMAIN,
+            translation_key="mqtt_unauthorized",
+        ) from err
     except RoborockException as err:
         _LOGGER.debug("Failed to get Roborock home data: %s", err)
         raise ConfigEntryNotReady(
diff --git a/homeassistant/components/roborock/strings.json b/homeassistant/components/roborock/strings.json
index 3c08b9e985d..23e9d9dd44b 100644
--- a/homeassistant/components/roborock/strings.json
+++ b/homeassistant/components/roborock/strings.json
@@ -424,6 +424,9 @@
     "map_failure": {
       "message": "Something went wrong creating the map"
     },
+    "mqtt_unauthorized": {
+      "message": "Roborock MQTT servers rejected the connection due to rate limiting or invalid credentials. You may either attempt to reauthenticate or wait and reload the integration."
+    },
     "no_coordinators": {
       "message": "No devices were able to successfully setup"
     },
diff --git a/tests/components/roborock/test_init.py b/tests/components/roborock/test_init.py
index 85d0983df04..8ed1ebaad16 100644
--- a/tests/components/roborock/test_init.py
+++ b/tests/components/roborock/test_init.py
@@ -13,6 +13,7 @@ from roborock import (
     RoborockNoUserAgreement,
 )
 from roborock.exceptions import RoborockException
+from roborock.mqtt.session import MqttSessionUnauthorized
 
 from homeassistant.components.homeassistant import (
     DOMAIN as HA_DOMAIN,
@@ -70,13 +71,18 @@ async def test_home_assistant_stop(
     assert device_manager.close.called
 
 
+@pytest.mark.parametrize(
+    "side_effect", [RoborockInvalidCredentials(), MqttSessionUnauthorized()]
+)
 async def test_reauth_started(
-    hass: HomeAssistant, mock_roborock_entry: MockConfigEntry
+    hass: HomeAssistant,
+    mock_roborock_entry: MockConfigEntry,
+    side_effect: Exception,
 ) -> None:
     """Test reauth flow started."""
     with patch(
         "homeassistant.components.roborock.create_device_manager",
-        side_effect=RoborockInvalidCredentials(),
+        side_effect=side_effect,
     ):
         await async_setup_component(hass, DOMAIN, {})
         await hass.async_block_till_done()