diff --git a/homeassistant/components/generic/config_flow.py b/homeassistant/components/generic/config_flow.py
index d16124225c6..7b10cdfb64b 100644
--- a/homeassistant/components/generic/config_flow.py
+++ b/homeassistant/components/generic/config_flow.py
@@ -9,7 +9,7 @@ from datetime import datetime
 from errno import EHOSTUNREACH, EIO
 import io
 import logging
-from typing import Any
+from typing import Any, cast
 
 from aiohttp import web
 from httpx import HTTPStatusError, RequestError, TimeoutException
@@ -47,7 +47,6 @@ from homeassistant.const import (
     HTTP_DIGEST_AUTHENTICATION,
 )
 from homeassistant.core import HomeAssistant
-from homeassistant.data_entry_flow import UnknownFlow
 from homeassistant.exceptions import HomeAssistantError, TemplateError
 from homeassistant.helpers import config_validation as cv, template as template_helper
 from homeassistant.helpers.httpx_client import get_async_client
@@ -316,6 +315,7 @@ class GenericIPCamConfigFlow(ConfigFlow, domain=DOMAIN):
 
     def __init__(self) -> None:
         """Initialize Generic ConfigFlow."""
+        self.preview_cam: dict[str, Any] = {}
         self.user_input: dict[str, Any] = {}
         self.title = ""
 
@@ -370,7 +370,7 @@ class GenericIPCamConfigFlow(ConfigFlow, domain=DOMAIN):
                             title=self.title, data={}, options=self.user_input
                         )
                     # temporary preview for user to check the image
-                    self.context["preview_cam"] = user_input
+                    self.preview_cam = user_input
                     return await self.async_step_user_confirm_still()
         elif self.user_input:
             user_input = self.user_input
@@ -412,6 +412,7 @@ class GenericOptionsFlowHandler(OptionsFlow):
     def __init__(self, config_entry: ConfigEntry) -> None:
         """Initialize Generic IP Camera options flow."""
         self.config_entry = config_entry
+        self.preview_cam: dict[str, Any] = {}
         self.user_input: dict[str, Any] = {}
 
     async def async_step_init(
@@ -443,7 +444,7 @@ class GenericOptionsFlowHandler(OptionsFlow):
                 }
                 self.user_input = data
                 # temporary preview for user to check the image
-                self.context["preview_cam"] = data
+                self.preview_cam = data
                 return await self.async_step_confirm_still()
         return self.async_show_form(
             step_id="init",
@@ -494,15 +495,17 @@ class CameraImagePreview(HomeAssistantView):
     async def get(self, request: web.Request, flow_id: str) -> web.Response:
         """Start a GET request."""
         _LOGGER.debug("processing GET request for flow_id=%s", flow_id)
-        try:
-            flow = self.hass.config_entries.flow.async_get(flow_id)
-        except UnknownFlow:
-            try:
-                flow = self.hass.config_entries.options.async_get(flow_id)
-            except UnknownFlow as exc:
-                _LOGGER.warning("Unknown flow while getting image preview")
-                raise web.HTTPNotFound from exc
-        user_input = flow["context"]["preview_cam"]
+        flow = cast(
+            GenericIPCamConfigFlow,
+            self.hass.config_entries.flow._progress.get(flow_id),  # noqa: SLF001
+        ) or cast(
+            GenericOptionsFlowHandler,
+            self.hass.config_entries.options._progress.get(flow_id),  # noqa: SLF001
+        )
+        if not flow:
+            _LOGGER.warning("Unknown flow while getting image preview")
+            raise web.HTTPNotFound
+        user_input = flow.preview_cam
         camera = GenericCamera(self.hass, user_input, flow_id, "preview")
         if not camera.is_on:
             _LOGGER.debug("Camera is off")