diff --git a/homeassistant/components/vicare/config_flow.py b/homeassistant/components/vicare/config_flow.py
index a0feb8f38ea..5b2d3afa427 100644
--- a/homeassistant/components/vicare/config_flow.py
+++ b/homeassistant/components/vicare/config_flow.py
@@ -4,7 +4,10 @@ from __future__ import annotations
 import logging
 from typing import Any
 
-from PyViCare.PyViCareUtils import PyViCareInvalidCredentialsError
+from PyViCare.PyViCareUtils import (
+    PyViCareInvalidConfigurationError,
+    PyViCareInvalidCredentialsError,
+)
 import voluptuous as vol
 
 from homeassistant import config_entries
@@ -53,7 +56,7 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
                 await self.hass.async_add_executor_job(
                     vicare_login, self.hass, user_input
                 )
-            except PyViCareInvalidCredentialsError:
+            except (PyViCareInvalidConfigurationError, PyViCareInvalidCredentialsError):
                 errors["base"] = "invalid_auth"
             else:
                 return self.async_create_entry(title=VICARE_NAME, data=user_input)
diff --git a/tests/components/vicare/test_config_flow.py b/tests/components/vicare/test_config_flow.py
index 0774848ef11..7f70c13f0b0 100644
--- a/tests/components/vicare/test_config_flow.py
+++ b/tests/components/vicare/test_config_flow.py
@@ -2,7 +2,10 @@
 from unittest.mock import AsyncMock, patch
 
 import pytest
-from PyViCare.PyViCareUtils import PyViCareInvalidCredentialsError
+from PyViCare.PyViCareUtils import (
+    PyViCareInvalidConfigurationError,
+    PyViCareInvalidCredentialsError,
+)
 from syrupy.assertion import SnapshotAssertion
 
 from homeassistant.components import dhcp
@@ -43,6 +46,22 @@ async def test_user_create_entry(
     assert result["step_id"] == "user"
     assert result["errors"] == {}
 
+    # test PyViCareInvalidConfigurationError
+    with patch(
+        f"{MODULE}.config_flow.vicare_login",
+        side_effect=PyViCareInvalidConfigurationError(
+            {"error": "foo", "error_description": "bar"}
+        ),
+    ):
+        result = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            VALID_CONFIG,
+        )
+        await hass.async_block_till_done()
+    assert result["type"] == FlowResultType.FORM
+    assert result["step_id"] == "user"
+    assert result["errors"] == {"base": "invalid_auth"}
+
     # test PyViCareInvalidCredentialsError
     with patch(
         f"{MODULE}.config_flow.vicare_login",