diff --git a/homeassistant/components/config/config_entries.py b/homeassistant/components/config/config_entries.py
index 584255764a34b1..7da89617bf7525 100644
--- a/homeassistant/components/config/config_entries.py
+++ b/homeassistant/components/config/config_entries.py
@@ -1,4 +1,6 @@
 """Http views to control the config manager."""
+from typing import Any, Dict, Optional
+
 import aiohttp.web_exceptions
 import voluptuous as vol
 import voluptuous_serialize
@@ -312,16 +314,12 @@ async def ignore_config_flow(hass, connection, msg):
         )
         return
 
-    if "unique_id" not in flow["context"]:
-        connection.send_error(
-            msg["id"], "no_unique_id", "Specified flow has no unique ID."
-        )
-        return
+    data: Optional[Dict[str, Any]] = None
+    if "unique_id" in flow["context"]:
+        data = {"unique_id": flow["context"]["unique_id"]}
 
     await hass.config_entries.flow.async_init(
-        flow["handler"],
-        context={"source": config_entries.SOURCE_IGNORE},
-        data={"unique_id": flow["context"]["unique_id"]},
+        flow["handler"], context={"source": config_entries.SOURCE_IGNORE}, data=data,
     )
     connection.send_result(msg["id"])
 
diff --git a/homeassistant/config_entries.py b/homeassistant/config_entries.py
index d4f76d9bb3767a..492f592caddf17 100644
--- a/homeassistant/config_entries.py
+++ b/homeassistant/config_entries.py
@@ -886,9 +886,14 @@ def _async_in_progress(self) -> List[Dict]:
             if flw["handler"] == self.handler and flw["flow_id"] != self.flow_id
         ]
 
-    async def async_step_ignore(self, user_input: Dict[str, Any]) -> Dict[str, Any]:
+    async def async_step_ignore(
+        self, user_input: Optional[Dict[str, Any]]
+    ) -> Dict[str, Any]:
         """Ignore this config flow."""
-        await self.async_set_unique_id(user_input["unique_id"], raise_on_progress=False)
+        if user_input is not None and "unique_id" in user_input:
+            await self.async_set_unique_id(
+                user_input["unique_id"], raise_on_progress=False
+            )
         return self.async_create_entry(title="Ignored", data={})
 
     async def async_step_unignore(self, user_input: Dict[str, Any]) -> Dict[str, Any]: