diff --git a/homeassistant/components/conversation/const.py b/homeassistant/components/conversation/const.py
index 7ba12ec830d..a8828fcc0e9 100644
--- a/homeassistant/components/conversation/const.py
+++ b/homeassistant/components/conversation/const.py
@@ -1,4 +1,5 @@
 """Const for conversation integration."""
 
 DOMAIN = "conversation"
+DEFAULT_EXPOSED_ATTRIBUTES = {"device_class"}
 HOME_ASSISTANT_AGENT = "homeassistant"
diff --git a/homeassistant/components/conversation/default_agent.py b/homeassistant/components/conversation/default_agent.py
index d347140af2e..8a5ef7b294e 100644
--- a/homeassistant/components/conversation/default_agent.py
+++ b/homeassistant/components/conversation/default_agent.py
@@ -21,19 +21,21 @@ from homeassistant.components.homeassistant.exposed_entities import (
     async_listen_entity_updates,
     async_should_expose,
 )
-from homeassistant.const import ATTR_DEVICE_CLASS
+from homeassistant.const import MATCH_ALL
 from homeassistant.helpers import (
     area_registry as ar,
     device_registry as dr,
     entity_registry as er,
     intent,
+    start,
     template,
     translation,
 )
+from homeassistant.helpers.event import async_track_state_change
 from homeassistant.util.json import JsonObjectType, json_loads_object
 
 from .agent import AbstractConversationAgent, ConversationInput, ConversationResult
-from .const import DOMAIN
+from .const import DEFAULT_EXPOSED_ATTRIBUTES, DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 _DEFAULT_ERROR_TEXT = "Sorry, I couldn't understand that"
@@ -81,16 +83,24 @@ def async_setup(hass: core.HomeAssistant) -> None:
         async_should_expose(hass, DOMAIN, entity_id)
 
     @core.callback
-    def async_handle_entity_registry_changed(event: core.Event) -> None:
-        """Set expose flag on newly created entities."""
-        if event.data["action"] == "create":
-            async_should_expose(hass, DOMAIN, event.data["entity_id"])
+    def async_entity_state_listener(
+        changed_entity: str,
+        old_state: core.State | None,
+        new_state: core.State | None,
+    ):
+        """Set expose flag on new entities."""
+        if old_state is not None or new_state is None:
+            return
+        async_should_expose(hass, DOMAIN, changed_entity)
 
-    hass.bus.async_listen(
-        er.EVENT_ENTITY_REGISTRY_UPDATED,
-        async_handle_entity_registry_changed,
-        run_immediately=True,
-    )
+    @core.callback
+    def async_hass_started(hass: core.HomeAssistant) -> None:
+        """Set expose flag on all entities."""
+        for state in hass.states.async_all():
+            async_should_expose(hass, DOMAIN, state.entity_id)
+        async_track_state_change(hass, MATCH_ALL, async_entity_state_listener)
+
+    start.async_at_started(hass, async_hass_started)
 
 
 class DefaultAgent(AbstractConversationAgent):
@@ -130,6 +140,11 @@ class DefaultAgent(AbstractConversationAgent):
             self._async_handle_entity_registry_changed,
             run_immediately=True,
         )
+        self.hass.bus.async_listen(
+            core.EVENT_STATE_CHANGED,
+            self._async_handle_state_changed,
+            run_immediately=True,
+        )
         async_listen_entity_updates(
             self.hass, DOMAIN, self._async_exposed_entities_updated
         )
@@ -475,12 +490,19 @@ class DefaultAgent(AbstractConversationAgent):
     @core.callback
     def _async_handle_entity_registry_changed(self, event: core.Event) -> None:
         """Clear names list cache when an entity registry entry has changed."""
-        if event.data["action"] == "update" and not any(
+        if event.data["action"] != "update" or not any(
             field in event.data["changes"] for field in _ENTITY_REGISTRY_UPDATE_FIELDS
         ):
             return
         self._slot_lists = None
 
+    @core.callback
+    def _async_handle_state_changed(self, event: core.Event) -> None:
+        """Clear names list cache when a state is added or removed from the state machine."""
+        if event.data.get("old_state") and event.data.get("new_state"):
+            return
+        self._slot_lists = None
+
     @core.callback
     def _async_exposed_entities_updated(self) -> None:
         """Handle updated preferences."""
@@ -493,30 +515,38 @@ class DefaultAgent(AbstractConversationAgent):
 
         area_ids_with_entities: set[str] = set()
         entity_registry = er.async_get(self.hass)
-        entities = [
-            entity
-            for entity in entity_registry.entities.values()
-            if async_should_expose(self.hass, DOMAIN, entity.entity_id)
+        states = [
+            state
+            for state in self.hass.states.async_all()
+            if async_should_expose(self.hass, DOMAIN, state.entity_id)
         ]
         devices = dr.async_get(self.hass)
 
         # Gather exposed entity names
         entity_names = []
-        for entity in entities:
+        for state in states:
             # Checked against "requires_context" and "excludes_context" in hassil
-            context = {"domain": entity.domain}
-            if entity.device_class:
-                context[ATTR_DEVICE_CLASS] = entity.device_class
+            context = {"domain": state.domain}
+            if state.attributes:
+                # Include some attributes
+                for attr in DEFAULT_EXPOSED_ATTRIBUTES:
+                    if attr not in state.attributes:
+                        continue
+                    context[attr] = state.attributes[attr]
+
+            entity = entity_registry.async_get(state.entity_id)
+
+            if not entity:
+                # Default name
+                entity_names.append((state.name, state.name, context))
+                continue
 
             if entity.aliases:
                 for alias in entity.aliases:
                     entity_names.append((alias, alias, context))
 
             # Default name
-            name = entity.async_friendly_name(self.hass) or entity.entity_id.replace(
-                "_", " "
-            )
-            entity_names.append((name, name, context))
+            entity_names.append((state.name, state.name, context))
 
             if entity.area_id:
                 # Expose area too
diff --git a/homeassistant/components/homeassistant/exposed_entities.py b/homeassistant/components/homeassistant/exposed_entities.py
index 56df611b323..159b54cb5a8 100644
--- a/homeassistant/components/homeassistant/exposed_entities.py
+++ b/homeassistant/components/homeassistant/exposed_entities.py
@@ -305,7 +305,11 @@ class ExposedEntities:
         if domain in DEFAULT_EXPOSED_DOMAINS:
             return True
 
-        device_class = get_device_class(self._hass, entity_id)
+        try:
+            device_class = get_device_class(self._hass, entity_id)
+        except HomeAssistantError:
+            # The entity no longer exists
+            return False
         if (
             domain == "binary_sensor"
             and device_class in DEFAULT_EXPOSED_BINARY_SENSOR_DEVICE_CLASSES
diff --git a/homeassistant/helpers/entity_registry.py b/homeassistant/helpers/entity_registry.py
index 3ed0ff8d472..d8c5a6c1cf6 100644
--- a/homeassistant/helpers/entity_registry.py
+++ b/homeassistant/helpers/entity_registry.py
@@ -307,26 +307,6 @@ class RegistryEntry:
 
         hass.states.async_set(self.entity_id, STATE_UNAVAILABLE, attrs)
 
-    def async_friendly_name(self, hass: HomeAssistant) -> str | None:
-        """Return the friendly name.
-
-        If self.name is not None, this returns self.name
-        If has_entity_name is False, self.original_name
-        If has_entity_name is True, this returns device.name + self.original_name
-        """
-        if not self.has_entity_name or self.name is not None:
-            return self.name or self.original_name
-
-        device_registry = dr.async_get(hass)
-        if not (device_id := self.device_id) or not (
-            device_entry := device_registry.async_get(device_id)
-        ):
-            return self.original_name
-
-        if not (original_name := self.original_name):
-            return device_entry.name_by_user or device_entry.name
-        return f"{device_entry.name_by_user or device_entry.name} {original_name}"
-
 
 class EntityRegistryStore(storage.Store[dict[str, list[dict[str, Any]]]]):
     """Store entity registry data."""
diff --git a/tests/components/air_quality/test_air_quality.py b/tests/components/air_quality/test_air_quality.py
index c2c18a6ed09..faaebda0aae 100644
--- a/tests/components/air_quality/test_air_quality.py
+++ b/tests/components/air_quality/test_air_quality.py
@@ -1,4 +1,6 @@
 """The tests for the Air Quality component."""
+import pytest
+
 from homeassistant.components.air_quality import ATTR_N2O, ATTR_OZONE, ATTR_PM_10
 from homeassistant.const import (
     ATTR_ATTRIBUTION,
@@ -9,6 +11,12 @@ from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 async def test_state(hass: HomeAssistant) -> None:
     """Test Air Quality state."""
     config = {"air_quality": {"platform": "demo"}}
diff --git a/tests/components/alexa/test_smart_home.py b/tests/components/alexa/test_smart_home.py
index 601f59fd118..a1f77a9b49b 100644
--- a/tests/components/alexa/test_smart_home.py
+++ b/tests/components/alexa/test_smart_home.py
@@ -39,6 +39,7 @@ def events(hass: HomeAssistant) -> list[Event]:
 @pytest.fixture
 async def mock_camera(hass: HomeAssistant) -> None:
     """Initialize a demo camera platform."""
+    assert await async_setup_component(hass, "homeassistant", {})
     assert await async_setup_component(
         hass, "camera", {camera.DOMAIN: {"platform": "demo"}}
     )
diff --git a/tests/components/automation/test_init.py b/tests/components/automation/test_init.py
index b8a1c52f473..3859e0c857c 100644
--- a/tests/components/automation/test_init.py
+++ b/tests/components/automation/test_init.py
@@ -1539,6 +1539,7 @@ async def test_automation_restore_last_triggered_with_initial_state(
 
 async def test_extraction_functions(hass: HomeAssistant) -> None:
     """Test extraction functions."""
+    await async_setup_component(hass, "homeassistant", {})
     await async_setup_component(hass, "calendar", {"calendar": {"platform": "demo"}})
     assert await async_setup_component(
         hass,
diff --git a/tests/components/calendar/conftest.py b/tests/components/calendar/conftest.py
new file mode 100644
index 00000000000..4d6b5adfde7
--- /dev/null
+++ b/tests/components/calendar/conftest.py
@@ -0,0 +1,11 @@
+"""Test fixtures for calendar sensor platforms."""
+import pytest
+
+from homeassistant.core import HomeAssistant
+from homeassistant.setup import async_setup_component
+
+
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
diff --git a/tests/components/calendar/test_recorder.py b/tests/components/calendar/test_recorder.py
index 4adb580a83e..d99a50bd286 100644
--- a/tests/components/calendar/test_recorder.py
+++ b/tests/components/calendar/test_recorder.py
@@ -1,6 +1,8 @@
 """The tests for calendar recorder."""
 from datetime import timedelta
 
+import pytest
+
 from homeassistant.components.recorder import Recorder
 from homeassistant.components.recorder.history import get_significant_states
 from homeassistant.const import ATTR_FRIENDLY_NAME
@@ -12,9 +14,15 @@ from tests.common import async_fire_time_changed
 from tests.components.recorder.common import async_wait_recording_done
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant():
+    """Override the fixture in calendar.conftest."""
+
+
 async def test_exclude_attributes(recorder_mock: Recorder, hass: HomeAssistant) -> None:
     """Test sensor attributes to be excluded."""
     now = dt_util.utcnow()
+    await async_setup_component(hass, "homeassistant", {})
     await async_setup_component(hass, "calendar", {"calendar": {"platform": "demo"}})
     await hass.async_block_till_done()
 
diff --git a/tests/components/camera/conftest.py b/tests/components/camera/conftest.py
index 65145f9d3be..8953158e423 100644
--- a/tests/components/camera/conftest.py
+++ b/tests/components/camera/conftest.py
@@ -5,11 +5,18 @@ import pytest
 
 from homeassistant.components import camera
 from homeassistant.components.camera.const import StreamType
+from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
 
 from .common import WEBRTC_ANSWER
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 @pytest.fixture(name="mock_camera")
 async def mock_camera_fixture(hass):
     """Initialize a demo camera platform."""
diff --git a/tests/components/camera/test_recorder.py b/tests/components/camera/test_recorder.py
index c6596e72251..df2b8cbe737 100644
--- a/tests/components/camera/test_recorder.py
+++ b/tests/components/camera/test_recorder.py
@@ -3,6 +3,8 @@ from __future__ import annotations
 
 from datetime import timedelta
 
+import pytest
+
 from homeassistant.components import camera
 from homeassistant.components.recorder import Recorder
 from homeassistant.components.recorder.history import get_significant_states
@@ -20,9 +22,15 @@ from tests.common import async_fire_time_changed
 from tests.components.recorder.common import async_wait_recording_done
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant():
+    """Override the fixture in calendar.conftest."""
+
+
 async def test_exclude_attributes(recorder_mock: Recorder, hass: HomeAssistant) -> None:
     """Test camera registered attributes to be excluded."""
     now = dt_util.utcnow()
+    await async_setup_component(hass, "homeassistant", {})
     await async_setup_component(
         hass, camera.DOMAIN, {camera.DOMAIN: {"platform": "demo"}}
     )
diff --git a/tests/components/conversation/test_default_agent.py b/tests/components/conversation/test_default_agent.py
index 44bb3111987..ced9d9cc5c8 100644
--- a/tests/components/conversation/test_default_agent.py
+++ b/tests/components/conversation/test_default_agent.py
@@ -91,21 +91,21 @@ async def test_exposed_areas(
     )
     device_registry.async_update_device(kitchen_device.id, area_id=area_kitchen.id)
 
-    kitchen_light = entity_registry.async_get_or_create(
-        "light", "demo", "1234", original_name="kitchen light"
-    )
+    kitchen_light = entity_registry.async_get_or_create("light", "demo", "1234")
     entity_registry.async_update_entity(
         kitchen_light.entity_id, device_id=kitchen_device.id
     )
-    hass.states.async_set(kitchen_light.entity_id, "on")
-
-    bedroom_light = entity_registry.async_get_or_create(
-        "light", "demo", "5678", original_name="bedroom light"
+    hass.states.async_set(
+        kitchen_light.entity_id, "on", attributes={ATTR_FRIENDLY_NAME: "kitchen light"}
     )
+
+    bedroom_light = entity_registry.async_get_or_create("light", "demo", "5678")
     entity_registry.async_update_entity(
         bedroom_light.entity_id, area_id=area_bedroom.id
     )
-    hass.states.async_set(bedroom_light.entity_id, "on")
+    hass.states.async_set(
+        bedroom_light.entity_id, "on", attributes={ATTR_FRIENDLY_NAME: "bedroom light"}
+    )
 
     # Hide the bedroom light
     expose_entity(hass, bedroom_light.entity_id, False)
@@ -156,6 +156,8 @@ async def test_expose_flag_automatically_set(
 
     assert await async_setup_component(hass, "conversation", {})
     await hass.async_block_till_done()
+    with patch("homeassistant.components.http.start_http_server_and_save_config"):
+        await hass.async_start()
 
     # After setting up conversation, the expose flag should now be set on all entities
     assert async_get_assistant_settings(hass, conversation.DOMAIN) == {
@@ -164,10 +166,11 @@ async def test_expose_flag_automatically_set(
     }
 
     # New entities will automatically have the expose flag set
-    new_light = entity_registry.async_get_or_create("light", "demo", "2345")
+    new_light = "light.demo_2345"
+    hass.states.async_set(new_light, "test")
     await hass.async_block_till_done()
     assert async_get_assistant_settings(hass, conversation.DOMAIN) == {
         light.entity_id: {"should_expose": True},
-        new_light.entity_id: {"should_expose": True},
+        new_light: {"should_expose": True},
         test.entity_id: {"should_expose": False},
     }
diff --git a/tests/components/conversation/test_init.py b/tests/components/conversation/test_init.py
index 6b981cbbdfa..54e7020fdda 100644
--- a/tests/components/conversation/test_init.py
+++ b/tests/components/conversation/test_init.py
@@ -202,11 +202,7 @@ async def test_http_processing_intent_entity_added_removed(
 
     # Add an entity
     entity_registry.async_get_or_create(
-        "light",
-        "demo",
-        "5678",
-        suggested_object_id="late",
-        original_name="friendly light",
+        "light", "demo", "5678", suggested_object_id="late"
     )
     hass.states.async_set("light.late", "off", {"friendly_name": "friendly light"})
 
@@ -274,7 +270,7 @@ async def test_http_processing_intent_entity_added_removed(
     }
 
     # Now delete the entity
-    entity_registry.async_remove("light.late")
+    hass.states.async_remove("light.late")
 
     client = await hass_client()
     resp = await client.post(
@@ -313,11 +309,7 @@ async def test_http_processing_intent_alias_added_removed(
     so that the new alias is available.
     """
     entity_registry.async_get_or_create(
-        "light",
-        "demo",
-        "1234",
-        suggested_object_id="kitchen",
-        original_name="kitchen light",
+        "light", "demo", "1234", suggested_object_id="kitchen"
     )
     hass.states.async_set("light.kitchen", "off", {"friendly_name": "kitchen light"})
 
@@ -438,7 +430,6 @@ async def test_http_processing_intent_entity_renamed(
         LIGHT_DOMAIN,
         {LIGHT_DOMAIN: [{"platform": "test"}]},
     )
-    await hass.async_block_till_done()
 
     calls = async_mock_service(hass, LIGHT_DOMAIN, "turn_on")
     client = await hass_client()
@@ -882,20 +873,9 @@ async def test_http_processing_intent_conversion_not_expose_new(
 @pytest.mark.parametrize("agent_id", AGENT_ID_OPTIONS)
 @pytest.mark.parametrize("sentence", ("turn on kitchen", "turn kitchen on"))
 async def test_turn_on_intent(
-    hass: HomeAssistant,
-    init_components,
-    entity_registry: er.EntityRegistry,
-    sentence,
-    agent_id,
+    hass: HomeAssistant, init_components, sentence, agent_id
 ) -> None:
     """Test calling the turn on intent."""
-    entity_registry.async_get_or_create(
-        "light",
-        "demo",
-        "1234",
-        suggested_object_id="kitchen",
-        original_name="kitchen",
-    )
     hass.states.async_set("light.kitchen", "off")
     calls = async_mock_service(hass, LIGHT_DOMAIN, "turn_on")
 
@@ -913,17 +893,8 @@ async def test_turn_on_intent(
 
 
 @pytest.mark.parametrize("sentence", ("turn off kitchen", "turn kitchen off"))
-async def test_turn_off_intent(
-    hass: HomeAssistant, init_components, entity_registry: er.EntityRegistry, sentence
-) -> None:
+async def test_turn_off_intent(hass: HomeAssistant, init_components, sentence) -> None:
     """Test calling the turn on intent."""
-    entity_registry.async_get_or_create(
-        "light",
-        "demo",
-        "1234",
-        suggested_object_id="kitchen",
-        original_name="kitchen",
-    )
     hass.states.async_set("light.kitchen", "on")
     calls = async_mock_service(hass, LIGHT_DOMAIN, "turn_off")
 
@@ -969,21 +940,11 @@ async def test_http_api_no_match(
 
 
 async def test_http_api_handle_failure(
-    hass: HomeAssistant,
-    init_components,
-    entity_registry: er.EntityRegistry,
-    hass_client: ClientSessionGenerator,
+    hass: HomeAssistant, init_components, hass_client: ClientSessionGenerator
 ) -> None:
     """Test the HTTP conversation API with an error during handling."""
     client = await hass_client()
 
-    entity_registry.async_get_or_create(
-        "light",
-        "demo",
-        "1234",
-        suggested_object_id="kitchen",
-        original_name="kitchen",
-    )
     hass.states.async_set("light.kitchen", "off")
 
     # Raise an error during intent handling
@@ -1020,19 +981,11 @@ async def test_http_api_handle_failure(
 async def test_http_api_unexpected_failure(
     hass: HomeAssistant,
     init_components,
-    entity_registry: er.EntityRegistry,
     hass_client: ClientSessionGenerator,
 ) -> None:
     """Test the HTTP conversation API with an unexpected error during handling."""
     client = await hass_client()
 
-    entity_registry.async_get_or_create(
-        "light",
-        "demo",
-        "1234",
-        suggested_object_id="kitchen",
-        original_name="kitchen",
-    )
     hass.states.async_set("light.kitchen", "off")
 
     # Raise an "unexpected" error during intent handling
@@ -1355,17 +1308,8 @@ async def test_prepare_fail(hass: HomeAssistant) -> None:
     assert not agent._lang_intents.get("not-a-language")
 
 
-async def test_language_region(
-    hass: HomeAssistant, init_components, entity_registry: er.EntityRegistry
-) -> None:
+async def test_language_region(hass: HomeAssistant, init_components) -> None:
     """Test calling the turn on intent."""
-    entity_registry.async_get_or_create(
-        "light",
-        "demo",
-        "1234",
-        suggested_object_id="kitchen",
-        original_name="kitchen",
-    )
     hass.states.async_set("light.kitchen", "off")
     calls = async_mock_service(hass, LIGHT_DOMAIN, "turn_on")
 
@@ -1414,17 +1358,8 @@ async def test_reload_on_new_component(hass: HomeAssistant) -> None:
     assert {"light"} == (lang_intents.loaded_components - loaded_components)
 
 
-async def test_non_default_response(
-    hass: HomeAssistant, init_components, entity_registry: er.EntityRegistry
-) -> None:
+async def test_non_default_response(hass: HomeAssistant, init_components) -> None:
     """Test intent response that is not the default."""
-    entity_registry.async_get_or_create(
-        "cover",
-        "demo",
-        "1234",
-        suggested_object_id="front_door",
-        original_name="front door",
-    )
     hass.states.async_set("cover.front_door", "closed")
     calls = async_mock_service(hass, "cover", SERVICE_OPEN_COVER)
 
diff --git a/tests/components/device_tracker/test_init.py b/tests/components/device_tracker/test_init.py
index 555942941eb..67bc24909c5 100644
--- a/tests/components/device_tracker/test_init.py
+++ b/tests/components/device_tracker/test_init.py
@@ -218,6 +218,7 @@ async def test_discover_platform(
     mock_demo_setup_scanner, mock_see, hass: HomeAssistant
 ) -> None:
     """Test discovery of device_tracker demo platform."""
+    await async_setup_component(hass, "homeassistant", {})
     with patch("homeassistant.components.device_tracker.legacy.update_config"):
         await discovery.async_load_platform(
             hass, device_tracker.DOMAIN, "demo", {"test_key": "test_val"}, {"bla": {}}
diff --git a/tests/components/facebox/test_image_processing.py b/tests/components/facebox/test_image_processing.py
index 25b9c5e89a2..4c6497b975b 100644
--- a/tests/components/facebox/test_image_processing.py
+++ b/tests/components/facebox/test_image_processing.py
@@ -75,6 +75,12 @@ VALID_CONFIG = {
 }
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 @pytest.fixture
 def mock_healthybox():
     """Mock fb.check_box_health."""
diff --git a/tests/components/google_assistant_sdk/test_init.py b/tests/components/google_assistant_sdk/test_init.py
index 837f98ad4b9..884107b7eb9 100644
--- a/tests/components/google_assistant_sdk/test_init.py
+++ b/tests/components/google_assistant_sdk/test_init.py
@@ -209,6 +209,7 @@ async def test_send_text_command_expired_token_refresh_failure(
     requires_reauth: ConfigEntryState,
 ) -> None:
     """Test failure refreshing token in send_text_command."""
+    await async_setup_component(hass, "homeassistant", {})
     await setup_integration()
 
     entries = hass.config_entries.async_entries(DOMAIN)
diff --git a/tests/components/homekit/test_type_cameras.py b/tests/components/homekit/test_type_cameras.py
index 1ce876ee584..9fcd36d06f3 100644
--- a/tests/components/homekit/test_type_cameras.py
+++ b/tests/components/homekit/test_type_cameras.py
@@ -43,6 +43,12 @@ MOCK_START_STREAM_SESSION_UUID = UUID("3303d503-17cc-469a-b672-92436a71a2f6")
 PID_THAT_WILL_NEVER_BE_ALIVE = 2147483647
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 async def _async_start_streaming(hass, acc):
     """Start streaming a camera."""
     acc.set_selected_stream_configuration(MOCK_START_STREAM_TLV)
diff --git a/tests/components/image_processing/test_init.py b/tests/components/image_processing/test_init.py
index 0c35da4d3cb..a59761d1c74 100644
--- a/tests/components/image_processing/test_init.py
+++ b/tests/components/image_processing/test_init.py
@@ -16,6 +16,12 @@ from tests.common import assert_setup_component, async_capture_events
 from tests.test_util.aiohttp import AiohttpClientMocker
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 @pytest.fixture
 def aiohttp_unused_port(event_loop, aiohttp_unused_port, socket_enabled):
     """Return aiohttp_unused_port and allow opening sockets."""
diff --git a/tests/components/media_player/test_init.py b/tests/components/media_player/test_init.py
index eb1e52bf335..b7bf35ab2f8 100644
--- a/tests/components/media_player/test_init.py
+++ b/tests/components/media_player/test_init.py
@@ -21,6 +21,12 @@ from tests.test_util.aiohttp import AiohttpClientMocker
 from tests.typing import ClientSessionGenerator, WebSocketGenerator
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 async def test_get_image_http(
     hass: HomeAssistant, hass_client_no_auth: ClientSessionGenerator
 ) -> None:
diff --git a/tests/components/media_player/test_recorder.py b/tests/components/media_player/test_recorder.py
index 31bf9e63dbf..98922d7d0a4 100644
--- a/tests/components/media_player/test_recorder.py
+++ b/tests/components/media_player/test_recorder.py
@@ -25,6 +25,7 @@ from tests.components.recorder.common import async_wait_recording_done
 async def test_exclude_attributes(recorder_mock: Recorder, hass: HomeAssistant) -> None:
     """Test media_player registered attributes to be excluded."""
     now = dt_util.utcnow()
+    await async_setup_component(hass, "homeassistant", {})
     await async_setup_component(
         hass, media_player.DOMAIN, {media_player.DOMAIN: {"platform": "demo"}}
     )
diff --git a/tests/components/microsoft_face/test_init.py b/tests/components/microsoft_face/test_init.py
index 5f61192033c..a33d9fcfdec 100644
--- a/tests/components/microsoft_face/test_init.py
+++ b/tests/components/microsoft_face/test_init.py
@@ -25,6 +25,12 @@ from tests.common import assert_setup_component, load_fixture
 from tests.test_util.aiohttp import AiohttpClientMocker
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 def create_group(hass, name):
     """Create a new person group.
 
diff --git a/tests/components/microsoft_face_detect/test_image_processing.py b/tests/components/microsoft_face_detect/test_image_processing.py
index 835341f0757..349440124ff 100644
--- a/tests/components/microsoft_face_detect/test_image_processing.py
+++ b/tests/components/microsoft_face_detect/test_image_processing.py
@@ -26,6 +26,12 @@ CONFIG = {
 ENDPOINT_URL = f"https://westus.{mf.FACE_API_URL}"
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 @pytest.fixture
 def store_mock():
     """Mock update store."""
diff --git a/tests/components/microsoft_face_identify/test_image_processing.py b/tests/components/microsoft_face_identify/test_image_processing.py
index 85a0ee39105..6581aea835f 100644
--- a/tests/components/microsoft_face_identify/test_image_processing.py
+++ b/tests/components/microsoft_face_identify/test_image_processing.py
@@ -14,6 +14,12 @@ from tests.components.image_processing import common
 from tests.test_util.aiohttp import AiohttpClientMocker
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 @pytest.fixture
 def store_mock():
     """Mock update store."""
diff --git a/tests/components/openalpr_cloud/test_image_processing.py b/tests/components/openalpr_cloud/test_image_processing.py
index 201c331a2e7..dfda0b0d282 100644
--- a/tests/components/openalpr_cloud/test_image_processing.py
+++ b/tests/components/openalpr_cloud/test_image_processing.py
@@ -14,6 +14,12 @@ from tests.components.image_processing import common
 from tests.test_util.aiohttp import AiohttpClientMocker
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 @pytest.fixture
 async def setup_openalpr_cloud(hass):
     """Set up openalpr cloud."""
diff --git a/tests/components/rtsp_to_webrtc/test_init.py b/tests/components/rtsp_to_webrtc/test_init.py
index a6d2d34b178..27656dd10c7 100644
--- a/tests/components/rtsp_to_webrtc/test_init.py
+++ b/tests/components/rtsp_to_webrtc/test_init.py
@@ -14,6 +14,7 @@ from homeassistant.components.rtsp_to_webrtc import CONF_STUN_SERVER, DOMAIN
 from homeassistant.components.websocket_api.const import TYPE_RESULT
 from homeassistant.config_entries import ConfigEntryState
 from homeassistant.core import HomeAssistant
+from homeassistant.setup import async_setup_component
 
 from .conftest import SERVER_URL, STREAM_SOURCE, ComponentSetup
 
@@ -27,6 +28,12 @@ OFFER_SDP = "v=0\r\no=carol 28908764872 28908764872 IN IP4 100.3.6.6\r\n..."
 ANSWER_SDP = "v=0\r\no=bob 2890844730 2890844730 IN IP4 host.example.com\r\n..."
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 async def test_setup_success(
     hass: HomeAssistant, rtsp_to_webrtc_client: Any, setup_integration: ComponentSetup
 ) -> None:
diff --git a/tests/components/sensor/test_recorder.py b/tests/components/sensor/test_recorder.py
index 241a1c60fbd..9b297bf884f 100644
--- a/tests/components/sensor/test_recorder.py
+++ b/tests/components/sensor/test_recorder.py
@@ -1373,6 +1373,7 @@ def test_compile_hourly_sum_statistics_negative_state(
     mocksensor._attr_should_poll = False
     platform.ENTITIES["custom_sensor"] = mocksensor
 
+    setup_component(hass, "homeassistant", {})
     setup_component(
         hass, "sensor", {"sensor": [{"platform": "demo"}, {"platform": "test"}]}
     )
diff --git a/tests/components/sighthound/test_image_processing.py b/tests/components/sighthound/test_image_processing.py
index 07fe2aee02c..5961b925a2a 100644
--- a/tests/components/sighthound/test_image_processing.py
+++ b/tests/components/sighthound/test_image_processing.py
@@ -46,6 +46,12 @@ MOCK_DETECTIONS = {
 MOCK_NOW = datetime.datetime(2020, 2, 20, 10, 5, 3)
 
 
+@pytest.fixture(autouse=True)
+async def setup_homeassistant(hass: HomeAssistant):
+    """Set up the homeassistant integration."""
+    await async_setup_component(hass, "homeassistant", {})
+
+
 @pytest.fixture
 def mock_detections():
     """Return a mock detection."""
diff --git a/tests/components/tts/test_notify.py b/tests/components/tts/test_notify.py
index 37fcbd7c7b3..be528459a70 100644
--- a/tests/components/tts/test_notify.py
+++ b/tests/components/tts/test_notify.py
@@ -72,6 +72,8 @@ async def test_setup_legacy_service(hass: HomeAssistant) -> None:
         },
     }
 
+    await async_setup_component(hass, "homeassistant", {})
+
     with assert_setup_component(1, tts.DOMAIN):
         assert await async_setup_component(hass, tts.DOMAIN, config)
 
diff --git a/tests/components/universal/test_media_player.py b/tests/components/universal/test_media_player.py
index fbf4e576dd5..a6cf342eeb3 100644
--- a/tests/components/universal/test_media_player.py
+++ b/tests/components/universal/test_media_player.py
@@ -1105,6 +1105,7 @@ async def test_state_template(hass: HomeAssistant) -> None:
 
 async def test_browse_media(hass: HomeAssistant) -> None:
     """Test browse media."""
+    await async_setup_component(hass, "homeassistant", {})
     await async_setup_component(
         hass, "media_player", {"media_player": {"platform": "demo"}}
     )
@@ -1135,6 +1136,7 @@ async def test_browse_media(hass: HomeAssistant) -> None:
 
 async def test_browse_media_override(hass: HomeAssistant) -> None:
     """Test browse media override."""
+    await async_setup_component(hass, "homeassistant", {})
     await async_setup_component(
         hass, "media_player", {"media_player": {"platform": "demo"}}
     )
diff --git a/tests/components/weather/test_recorder.py b/tests/components/weather/test_recorder.py
index f5d031f0f6c..5d7928124dd 100644
--- a/tests/components/weather/test_recorder.py
+++ b/tests/components/weather/test_recorder.py
@@ -18,6 +18,7 @@ from tests.components.recorder.common import async_wait_recording_done
 async def test_exclude_attributes(recorder_mock: Recorder, hass: HomeAssistant) -> None:
     """Test weather attributes to be excluded."""
     now = dt_util.utcnow()
+    await async_setup_component(hass, "homeassistant", {})
     await async_setup_component(hass, DOMAIN, {DOMAIN: {"platform": "demo"}})
     hass.config.units = METRIC_SYSTEM
     await hass.async_block_till_done()