diff --git a/homeassistant/components/netatmo/__init__.py b/homeassistant/components/netatmo/__init__.py
index 9c92724c543..f11325b02bf 100644
--- a/homeassistant/components/netatmo/__init__.py
+++ b/homeassistant/components/netatmo/__init__.py
@@ -20,10 +20,11 @@ from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_WEBHOOK_ID, EVENT_HOMEASSISTANT_STOP
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed, ConfigEntryNotReady
-from homeassistant.helpers import (
-    aiohttp_client,
-    config_entry_oauth2_flow,
-    config_validation as cv,
+from homeassistant.helpers import aiohttp_client, config_validation as cv
+from homeassistant.helpers.config_entry_oauth2_flow import (
+    ImplementationUnavailableError,
+    OAuth2Session,
+    async_get_config_entry_implementation,
 )
 from homeassistant.helpers.device_registry import DeviceEntry
 from homeassistant.helpers.dispatcher import async_dispatcher_send
@@ -73,17 +74,19 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up Netatmo from a config entry."""
-    implementation = (
-        await config_entry_oauth2_flow.async_get_config_entry_implementation(
-            hass, entry
-        )
-    )
+    try:
+        implementation = await async_get_config_entry_implementation(hass, entry)
+    except ImplementationUnavailableError as err:
+        raise ConfigEntryNotReady(
+            translation_domain=DOMAIN,
+            translation_key="oauth2_implementation_unavailable",
+        ) from err
 
     # Set unique id if non was set (migration)
     if not entry.unique_id:
         hass.config_entries.async_update_entry(entry, unique_id=DOMAIN)
 
-    session = config_entry_oauth2_flow.OAuth2Session(hass, entry, implementation)
+    session = OAuth2Session(hass, entry, implementation)
     try:
         await session.async_ensure_token_valid()
     except aiohttp.ClientResponseError as ex:
diff --git a/homeassistant/components/netatmo/strings.json b/homeassistant/components/netatmo/strings.json
index befc9ea843d..0f53cb0dba0 100644
--- a/homeassistant/components/netatmo/strings.json
+++ b/homeassistant/components/netatmo/strings.json
@@ -143,6 +143,11 @@
       }
     }
   },
+  "exceptions": {
+    "oauth2_implementation_unavailable": {
+      "message": "[%key:common::exceptions::oauth2_implementation_unavailable::message%]"
+    }
+  },
   "options": {
     "step": {
       "public_weather": {
diff --git a/tests/components/netatmo/common.py b/tests/components/netatmo/common.py
index acdc3c491ff..617a0070f5c 100644
--- a/tests/components/netatmo/common.py
+++ b/tests/components/netatmo/common.py
@@ -119,7 +119,7 @@ def selected_platforms(platforms: list[Platform]) -> Iterator[None]:
     with (
         patch("homeassistant.components.netatmo.data_handler.PLATFORMS", platforms),
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ),
         patch(
             "homeassistant.components.netatmo.webhook_generate_url",
diff --git a/tests/components/netatmo/test_camera.py b/tests/components/netatmo/test_camera.py
index 72b18f2e1d2..042806b9324 100644
--- a/tests/components/netatmo/test_camera.py
+++ b/tests/components/netatmo/test_camera.py
@@ -416,7 +416,7 @@ async def test_camera_reconnect_webhook(
         ) as mock_auth,
         patch("homeassistant.components.netatmo.data_handler.PLATFORMS", ["camera"]),
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ),
         patch(
             "homeassistant.components.netatmo.webhook_generate_url",
@@ -515,7 +515,7 @@ async def test_setup_component_no_devices(
         ) as mock_auth,
         patch("homeassistant.components.netatmo.data_handler.PLATFORMS", ["camera"]),
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ),
         patch(
             "homeassistant.components.netatmo.webhook_generate_url",
@@ -558,7 +558,7 @@ async def test_camera_image_raises_exception(
         ) as mock_auth,
         patch("homeassistant.components.netatmo.data_handler.PLATFORMS", ["camera"]),
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ),
         patch(
             "homeassistant.components.netatmo.webhook_generate_url",
diff --git a/tests/components/netatmo/test_diagnostics.py b/tests/components/netatmo/test_diagnostics.py
index 1ada0bdd2bf..dde28fe3bc7 100644
--- a/tests/components/netatmo/test_diagnostics.py
+++ b/tests/components/netatmo/test_diagnostics.py
@@ -28,7 +28,7 @@ async def test_entry_diagnostics(
             "homeassistant.components.netatmo.api.AsyncConfigEntryNetatmoAuth",
         ) as mock_auth,
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ),
         patch(
             "homeassistant.components.netatmo.webhook_generate_url",
diff --git a/tests/components/netatmo/test_init.py b/tests/components/netatmo/test_init.py
index eb052b93288..540927fdb78 100644
--- a/tests/components/netatmo/test_init.py
+++ b/tests/components/netatmo/test_init.py
@@ -16,6 +16,9 @@ from homeassistant.config_entries import ConfigEntryState
 from homeassistant.const import CONF_WEBHOOK_ID, Platform
 from homeassistant.core import CoreState, HomeAssistant
 from homeassistant.helpers import device_registry as dr, entity_registry as er
+from homeassistant.helpers.config_entry_oauth2_flow import (
+    ImplementationUnavailableError,
+)
 from homeassistant.setup import async_setup_component
 from homeassistant.util import dt as dt_util
 
@@ -65,7 +68,7 @@ async def test_setup_component(
             "homeassistant.components.netatmo.api.AsyncConfigEntryNetatmoAuth",
         ) as mock_auth,
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ) as mock_impl,
         patch("homeassistant.components.netatmo.webhook_generate_url") as mock_webhook,
     ):
@@ -108,7 +111,7 @@ async def test_setup_component_with_config(
 
     with (
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ) as mock_impl,
         patch("homeassistant.components.netatmo.webhook_generate_url") as mock_webhook,
         patch(
@@ -181,7 +184,7 @@ async def test_setup_without_https(
             "homeassistant.components.netatmo.api.AsyncConfigEntryNetatmoAuth"
         ) as mock_auth,
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ),
         patch(
             "homeassistant.components.netatmo.webhook_generate_url"
@@ -225,7 +228,7 @@ async def test_setup_with_cloud(
         ) as mock_auth,
         patch("homeassistant.components.netatmo.data_handler.PLATFORMS", []),
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ),
         patch(
             "homeassistant.components.netatmo.webhook_generate_url",
@@ -295,7 +298,7 @@ async def test_setup_with_cloudhook(hass: HomeAssistant) -> None:
         ) as mock_auth,
         patch("homeassistant.components.netatmo.data_handler.PLATFORMS", []),
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ),
         patch(
             "homeassistant.components.netatmo.webhook_generate_url",
@@ -340,7 +343,7 @@ async def test_setup_component_with_delay(
             "pyatmo.AbstractAsyncAuth.async_dropwebhook", side_effect=AsyncMock()
         ) as mock_dropwebhook,
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ) as mock_impl,
         patch("homeassistant.components.netatmo.webhook_generate_url") as mock_webhook,
         patch(
@@ -410,7 +413,7 @@ async def test_setup_component_invalid_token_scope(hass: HomeAssistant) -> None:
             "homeassistant.components.netatmo.api.AsyncConfigEntryNetatmoAuth",
         ) as mock_auth,
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ) as mock_impl,
         patch("homeassistant.components.netatmo.webhook_generate_url") as mock_webhook,
     ):
@@ -459,12 +462,10 @@ async def test_setup_component_invalid_token(
             "homeassistant.components.netatmo.api.AsyncConfigEntryNetatmoAuth",
         ) as mock_auth,
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ) as mock_impl,
         patch("homeassistant.components.netatmo.webhook_generate_url") as mock_webhook,
-        patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.OAuth2Session"
-        ) as mock_session,
+        patch("homeassistant.components.netatmo.OAuth2Session") as mock_session,
     ):
         mock_auth.return_value.async_post_api_request.side_effect = partial(
             fake_post_request, hass
@@ -557,3 +558,19 @@ async def test_device_remove_devices(
     )
     response = await client.remove_device(dead_device_entry.id, config_entry.entry_id)
     assert response["success"]
+
+
+async def test_oauth_implementation_not_available(
+    hass: HomeAssistant, config_entry: MockConfigEntry
+) -> None:
+    """Test that unavailable OAuth implementation raises ConfigEntryNotReady."""
+    config_entry.add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.netatmo.async_get_config_entry_implementation",
+        side_effect=ImplementationUnavailableError,
+    ):
+        await hass.config_entries.async_setup(config_entry.entry_id)
+        await hass.async_block_till_done()
+
+    assert config_entry.state is ConfigEntryState.SETUP_RETRY
diff --git a/tests/components/netatmo/test_light.py b/tests/components/netatmo/test_light.py
index 16a3ac2aaeb..0ede4146044 100644
--- a/tests/components/netatmo/test_light.py
+++ b/tests/components/netatmo/test_light.py
@@ -129,7 +129,7 @@ async def test_setup_component_no_devices(hass: HomeAssistant, config_entry) ->
         ) as mock_auth,
         patch("homeassistant.components.netatmo.data_handler.PLATFORMS", ["light"]),
         patch(
-            "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+            "homeassistant.components.netatmo.async_get_config_entry_implementation",
         ),
         patch(
             "homeassistant.components.netatmo.webhook_generate_url",