diff --git a/tests/common.py b/tests/common.py
index ad14481e385..8bd45e4d7f8 100644
--- a/tests/common.py
+++ b/tests/common.py
@@ -1064,6 +1064,8 @@ class MockConfigEntry(config_entries.ConfigEntry):
         data: dict[str, Any] | None = None,
     ) -> ConfigFlowResult:
         """Start a reauthentication flow."""
+        if self.entry_id not in hass.config_entries._entries:
+            raise ValueError("Config entry must be added to hass to start reauth flow")
         return await start_reauth_flow(hass, self, context, data)
 
     async def start_reconfigure_flow(
@@ -1073,6 +1075,10 @@ class MockConfigEntry(config_entries.ConfigEntry):
         show_advanced_options: bool = False,
     ) -> ConfigFlowResult:
         """Start a reconfiguration flow."""
+        if self.entry_id not in hass.config_entries._entries:
+            raise ValueError(
+                "Config entry must be added to hass to start reconfiguration flow"
+            )
         return await hass.config_entries.flow.async_init(
             self.domain,
             context={
diff --git a/tests/components/azure_devops/test_config_flow.py b/tests/components/azure_devops/test_config_flow.py
index 577067d5744..64c771a7adc 100644
--- a/tests/components/azure_devops/test_config_flow.py
+++ b/tests/components/azure_devops/test_config_flow.py
@@ -57,6 +57,7 @@ async def test_reauth_authorization_error(
     mock_devops_client: AsyncMock,
 ) -> None:
     """Test we show user form on Azure DevOps authorization error."""
+    mock_config_entry.add_to_hass(hass)
     mock_devops_client.authorize.return_value = False
     mock_devops_client.authorized = False
 
@@ -108,6 +109,7 @@ async def test_reauth_connection_error(
     mock_devops_client: AsyncMock,
 ) -> None:
     """Test we show user form on Azure DevOps connection error."""
+    mock_config_entry.add_to_hass(hass)
     mock_devops_client.authorize.side_effect = aiohttp.ClientError
     mock_devops_client.authorized = False