diff --git a/homeassistant/components/generic/config_flow.py b/homeassistant/components/generic/config_flow.py
index 7b10cdfb64b..a8f3f6f386b 100644
--- a/homeassistant/components/generic/config_flow.py
+++ b/homeassistant/components/generic/config_flow.py
@@ -282,7 +282,7 @@ async def async_test_stream(
             return {CONF_STREAM_SOURCE: "timeout"}
         await stream.stop()
     except StreamWorkerError as err:
-        return {CONF_STREAM_SOURCE: str(err)}
+        return {CONF_STREAM_SOURCE: "unknown_with_details", "error_details": str(err)}
     except PermissionError:
         return {CONF_STREAM_SOURCE: "stream_not_permitted"}
     except OSError as err:
@@ -339,6 +339,7 @@ class GenericIPCamConfigFlow(ConfigFlow, domain=DOMAIN):
     ) -> ConfigFlowResult:
         """Handle the start of the config flow."""
         errors = {}
+        description_placeholders = {}
         hass = self.hass
         if user_input:
             # Secondary validation because serialised vol can't seem to handle this complexity:
@@ -372,6 +373,8 @@ class GenericIPCamConfigFlow(ConfigFlow, domain=DOMAIN):
                     # temporary preview for user to check the image
                     self.preview_cam = user_input
                     return await self.async_step_user_confirm_still()
+                if "error_details" in errors:
+                    description_placeholders["error"] = errors.pop("error_details")
         elif self.user_input:
             user_input = self.user_input
         else:
@@ -379,6 +382,7 @@ class GenericIPCamConfigFlow(ConfigFlow, domain=DOMAIN):
         return self.async_show_form(
             step_id="user",
             data_schema=build_schema(user_input),
+            description_placeholders=description_placeholders,
             errors=errors,
         )
 
diff --git a/homeassistant/components/generic/strings.json b/homeassistant/components/generic/strings.json
index b05f17efc8d..94360a5b7c2 100644
--- a/homeassistant/components/generic/strings.json
+++ b/homeassistant/components/generic/strings.json
@@ -3,6 +3,7 @@
   "config": {
     "error": {
       "unknown": "[%key:common::config_flow::error::unknown%]",
+      "unknown_with_details": "An unknown error occurred: {error}",
       "already_exists": "A camera with these URL settings already exists.",
       "unable_still_load": "Unable to load valid image from still image URL (e.g. invalid host, URL or authentication failure).  Review log for more info.",
       "unable_still_load_auth": "Unable to load valid image from still image URL: The camera may require a user name and password, or they are not correct.",
diff --git a/tests/components/generic/test_config_flow.py b/tests/components/generic/test_config_flow.py
index 7575a078675..a882ca4cd8d 100644
--- a/tests/components/generic/test_config_flow.py
+++ b/tests/components/generic/test_config_flow.py
@@ -637,10 +637,6 @@ async def test_form_stream_other_error(hass: HomeAssistant, user_flow) -> None:
     await hass.async_block_till_done()
 
 
-@pytest.mark.parametrize(  # Remove when translations fixed
-    "ignore_translations",
-    ["component.generic.config.error.Some message"],
-)
 @respx.mock
 @pytest.mark.usefixtures("fakeimg_png")
 async def test_form_stream_worker_error(
@@ -656,7 +652,8 @@ async def test_form_stream_worker_error(
             TESTDATA,
         )
     assert result2["type"] is FlowResultType.FORM
-    assert result2["errors"] == {"stream_source": "Some message"}
+    assert result2["errors"] == {"stream_source": "unknown_with_details"}
+    assert result2["description_placeholders"] == {"error": "Some message"}
 
 
 @respx.mock