diff --git a/homeassistant/components/lifx/light.py b/homeassistant/components/lifx/light.py
index f06a7720bb2..9f1c5747aa8 100644
--- a/homeassistant/components/lifx/light.py
+++ b/homeassistant/components/lifx/light.py
@@ -4,7 +4,6 @@ from datetime import timedelta
 from functools import partial
 import logging
 import math
-import sys
 
 import aiolifx as aiolifx_module
 import aiolifx_effects as aiolifx_effects_module
@@ -166,12 +165,6 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
 
 async def async_setup_entry(hass, config_entry, async_add_entities):
     """Set up LIFX from a config entry."""
-    if sys.platform == "win32":
-        _LOGGER.warning(
-            "The lifx platform is known to not work on Windows. "
-            "Consider using the lifx_legacy platform instead"
-        )
-
     # Priority 1: manual config
     interfaces = hass.data[LIFX_DOMAIN].get(DOMAIN)
     if not interfaces:
diff --git a/homeassistant/components/lifx_legacy/light.py b/homeassistant/components/lifx_legacy/light.py
index f0ed9105b99..4d50ecbecf2 100644
--- a/homeassistant/components/lifx_legacy/light.py
+++ b/homeassistant/components/lifx_legacy/light.py
@@ -46,13 +46,22 @@ SUPPORT_LIFX = (
     SUPPORT_BRIGHTNESS | SUPPORT_COLOR_TEMP | SUPPORT_COLOR | SUPPORT_TRANSITION
 )
 
-PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
-    {vol.Optional(CONF_SERVER): cv.string, vol.Optional(CONF_BROADCAST): cv.string}
+PLATFORM_SCHEMA = vol.All(
+    cv.deprecated(CONF_SERVER),
+    cv.deprecated(CONF_BROADCAST),
+    PLATFORM_SCHEMA.extend(
+        {vol.Optional(CONF_SERVER): cv.string, vol.Optional(CONF_BROADCAST): cv.string}
+    ),
 )
 
 
 def setup_platform(hass, config, add_entities, discovery_info=None):
     """Set up the LIFX platform."""
+    _LOGGER.warning(
+        "The LIFX Legacy platform is deprecated and will be removed in "
+        "Home Assistant Core 2021.6.0. Use the LIFX integration instead."
+    )
+
     server_addr = config.get(CONF_SERVER)
     broadcast_addr = config.get(CONF_BROADCAST)