diff --git a/homeassistant/components/alexa/entities.py b/homeassistant/components/alexa/entities.py
index fce05c8dc86..d4676344a62 100644
--- a/homeassistant/components/alexa/entities.py
+++ b/homeassistant/components/alexa/entities.py
@@ -791,19 +791,18 @@ class CameraCapabilities(AlexaEntity):
         yield Alexa(self.hass)
 
     def _check_requirements(self):
-        """Check the hass URL for HTTPS scheme and port 443."""
+        """Check the hass URL for HTTPS scheme."""
         if "stream" not in self.hass.config.components:
-            _LOGGER.error(
+            _LOGGER.debug(
                 "%s requires stream component for AlexaCameraStreamController",
                 self.entity_id,
             )
             return False
 
         url = urlparse(network.async_get_external_url(self.hass))
-        if url.scheme != "https" or (url.port is not None and url.port != 443):
-            _LOGGER.error(
-                "%s requires HTTPS support on port 443 for AlexaCameraStreamController",
-                self.entity_id,
+        if url.scheme != "https":
+            _LOGGER.debug(
+                "%s requires HTTPS for AlexaCameraStreamController", self.entity_id
             )
             return False
 
diff --git a/homeassistant/components/cloud/__init__.py b/homeassistant/components/cloud/__init__.py
index 0a0b9f0fe88..ad97284d857 100644
--- a/homeassistant/components/cloud/__init__.py
+++ b/homeassistant/components/cloud/__init__.py
@@ -10,7 +10,6 @@ from homeassistant.const import (
     CONF_MODE,
     CONF_NAME,
     CONF_REGION,
-    EVENT_HOMEASSISTANT_START,
     EVENT_HOMEASSISTANT_STOP,
 )
 from homeassistant.core import callback
@@ -191,12 +190,6 @@ async def async_setup(hass, config):
     client = CloudClient(hass, prefs, websession, alexa_conf, google_conf)
     cloud = hass.data[DOMAIN] = Cloud(client, **kwargs)
 
-    async def _startup(event):
-        """Startup event."""
-        await cloud.start()
-
-    hass.bus.async_listen_once(EVENT_HOMEASSISTANT_START, _startup)
-
     async def _shutdown(event):
         """Shutdown event."""
         await cloud.stop()
@@ -230,20 +223,15 @@ async def async_setup(hass, config):
             return
         loaded = True
 
-        hass.async_create_task(
-            hass.helpers.discovery.async_load_platform(
-                "binary_sensor", DOMAIN, {}, config
-            )
-        )
-        hass.async_create_task(
-            hass.helpers.discovery.async_load_platform("stt", DOMAIN, {}, config)
-        )
-        hass.async_create_task(
-            hass.helpers.discovery.async_load_platform("tts", DOMAIN, {}, config)
+        await hass.helpers.discovery.async_load_platform(
+            "binary_sensor", DOMAIN, {}, config
         )
+        await hass.helpers.discovery.async_load_platform("stt", DOMAIN, {}, config)
+        await hass.helpers.discovery.async_load_platform("tts", DOMAIN, {}, config)
 
     cloud.iot.register_on_connect(_on_connect)
 
+    await cloud.start()
     await http_api.async_setup(hass)
 
     account_link.async_setup(hass)
diff --git a/homeassistant/components/cloud/manifest.json b/homeassistant/components/cloud/manifest.json
index cfbb221c164..b8c2bc277f0 100644
--- a/homeassistant/components/cloud/manifest.json
+++ b/homeassistant/components/cloud/manifest.json
@@ -2,7 +2,7 @@
   "domain": "cloud",
   "name": "Home Assistant Cloud",
   "documentation": "https://www.home-assistant.io/integrations/cloud",
-  "requirements": ["hass-nabucasa==0.32.2"],
+  "requirements": ["hass-nabucasa==0.33.0"],
   "dependencies": ["http", "webhook", "alexa"],
   "after_dependencies": ["google_assistant"],
   "codeowners": ["@home-assistant/cloud"]
diff --git a/homeassistant/components/modbus/__init__.py b/homeassistant/components/modbus/__init__.py
index 1e889043fae..34a396758cb 100644
--- a/homeassistant/components/modbus/__init__.py
+++ b/homeassistant/components/modbus/__init__.py
@@ -1,14 +1,8 @@
 """Support for Modbus."""
-import asyncio
 import logging
+import threading
 
-from async_timeout import timeout
-from pymodbus.client.asynchronous import schedulers
-from pymodbus.client.asynchronous.serial import AsyncModbusSerialClient as ClientSerial
-from pymodbus.client.asynchronous.tcp import AsyncModbusTCPClient as ClientTCP
-from pymodbus.client.asynchronous.udp import AsyncModbusUDPClient as ClientUDP
-from pymodbus.exceptions import ModbusException
-from pymodbus.pdu import ExceptionResponse
+from pymodbus.client.sync import ModbusSerialClient, ModbusTcpClient, ModbusUdpClient
 from pymodbus.transaction import ModbusRtuFramer
 import voluptuous as vol
 
@@ -42,6 +36,7 @@ from .const import (
 
 _LOGGER = logging.getLogger(__name__)
 
+
 BASE_SCHEMA = vol.Schema({vol.Optional(CONF_NAME, default=DEFAULT_HUB): cv.string})
 
 SERIAL_SCHEMA = BASE_SCHEMA.extend(
@@ -93,60 +88,55 @@ SERVICE_WRITE_COIL_SCHEMA = vol.Schema(
 )
 
 
-async def async_setup(hass, config):
+def setup(hass, config):
     """Set up Modbus component."""
     hass.data[DOMAIN] = hub_collect = {}
 
     for client_config in config[DOMAIN]:
-        hub_collect[client_config[CONF_NAME]] = ModbusHub(client_config, hass.loop)
+        hub_collect[client_config[CONF_NAME]] = ModbusHub(client_config)
 
     def stop_modbus(event):
         """Stop Modbus service."""
         for client in hub_collect.values():
-            del client
+            client.close()
 
-    def start_modbus():
-        """Start Modbus service."""
-        for client in hub_collect.values():
-            client.setup()
-
-        hass.bus.listen_once(EVENT_HOMEASSISTANT_STOP, stop_modbus)
-
-    async def write_register(service):
+    def write_register(service):
         """Write Modbus registers."""
         unit = int(float(service.data[ATTR_UNIT]))
         address = int(float(service.data[ATTR_ADDRESS]))
         value = service.data[ATTR_VALUE]
         client_name = service.data[ATTR_HUB]
         if isinstance(value, list):
-            await hub_collect[client_name].write_registers(
+            hub_collect[client_name].write_registers(
                 unit, address, [int(float(i)) for i in value]
             )
         else:
-            await hub_collect[client_name].write_register(
-                unit, address, int(float(value))
-            )
+            hub_collect[client_name].write_register(unit, address, int(float(value)))
 
-    async def write_coil(service):
+    def write_coil(service):
         """Write Modbus coil."""
         unit = service.data[ATTR_UNIT]
         address = service.data[ATTR_ADDRESS]
         state = service.data[ATTR_STATE]
         client_name = service.data[ATTR_HUB]
-        await hub_collect[client_name].write_coil(unit, address, state)
+        hub_collect[client_name].write_coil(unit, address, state)
 
     # do not wait for EVENT_HOMEASSISTANT_START, activate pymodbus now
-    await hass.async_add_executor_job(start_modbus)
+    for client in hub_collect.values():
+        client.setup()
+
+    # register function to gracefully stop modbus
+    hass.bus.async_listen_once(EVENT_HOMEASSISTANT_STOP, stop_modbus)
 
     # Register services for modbus
-    hass.services.async_register(
+    hass.services.register(
         DOMAIN,
         SERVICE_WRITE_REGISTER,
         write_register,
         schema=SERVICE_WRITE_REGISTER_SCHEMA,
     )
-    hass.services.async_register(
-        DOMAIN, SERVICE_WRITE_COIL, write_coil, schema=SERVICE_WRITE_COIL_SCHEMA,
+    hass.services.register(
+        DOMAIN, SERVICE_WRITE_COIL, write_coil, schema=SERVICE_WRITE_COIL_SCHEMA
     )
     return True
 
@@ -154,13 +144,12 @@ async def async_setup(hass, config):
 class ModbusHub:
     """Thread safe wrapper class for pymodbus."""
 
-    def __init__(self, client_config, main_loop):
+    def __init__(self, client_config):
         """Initialize the Modbus hub."""
 
         # generic configuration
-        self._loop = main_loop
         self._client = None
-        self._lock = asyncio.Lock()
+        self._lock = threading.Lock()
         self._config_name = client_config[CONF_NAME]
         self._config_type = client_config[CONF_TYPE]
         self._config_port = client_config[CONF_PORT]
@@ -178,136 +167,101 @@ class ModbusHub:
             # network configuration
             self._config_host = client_config[CONF_HOST]
             self._config_delay = client_config[CONF_DELAY]
+            if self._config_delay > 0:
+                _LOGGER.warning(
+                    "Parameter delay is accepted but not used in this version"
+                )
 
     @property
     def name(self):
         """Return the name of this hub."""
         return self._config_name
 
-    async def _connect_delay(self):
-        if self._config_delay > 0:
-            await asyncio.sleep(self._config_delay)
-            self._config_delay = 0
-
     def setup(self):
         """Set up pymodbus client."""
-        # pylint: disable = E0633
-        # Client* do deliver loop, client as result but
-        # pylint does not accept that fact
-
         if self._config_type == "serial":
-            _, self._client = ClientSerial(
-                schedulers.ASYNC_IO,
+            self._client = ModbusSerialClient(
                 method=self._config_method,
                 port=self._config_port,
                 baudrate=self._config_baudrate,
                 stopbits=self._config_stopbits,
                 bytesize=self._config_bytesize,
                 parity=self._config_parity,
-                loop=self._loop,
+                timeout=self._config_timeout,
             )
         elif self._config_type == "rtuovertcp":
-            _, self._client = ClientTCP(
-                schedulers.ASYNC_IO,
+            self._client = ModbusTcpClient(
                 host=self._config_host,
                 port=self._config_port,
                 framer=ModbusRtuFramer,
                 timeout=self._config_timeout,
-                loop=self._loop,
             )
         elif self._config_type == "tcp":
-            _, self._client = ClientTCP(
-                schedulers.ASYNC_IO,
+            self._client = ModbusTcpClient(
                 host=self._config_host,
                 port=self._config_port,
                 timeout=self._config_timeout,
-                loop=self._loop,
             )
         elif self._config_type == "udp":
-            _, self._client = ClientUDP(
-                schedulers.ASYNC_IO,
+            self._client = ModbusUdpClient(
                 host=self._config_host,
                 port=self._config_port,
                 timeout=self._config_timeout,
-                loop=self._loop,
             )
         else:
             assert False
 
-    async def _read(self, unit, address, count, func):
-        """Read generic with error handling."""
-        await self._connect_delay()
-        async with self._lock:
-            kwargs = {"unit": unit} if unit else {}
-            try:
-                async with timeout(self._config_timeout):
-                    result = await func(address, count, **kwargs)
-            except asyncio.TimeoutError:
-                result = None
+        # Connect device
+        self.connect()
 
-            if isinstance(result, (ModbusException, ExceptionResponse)):
-                _LOGGER.error("Hub %s Exception (%s)", self._config_name, result)
-            return result
+    def close(self):
+        """Disconnect client."""
+        with self._lock:
+            self._client.close()
 
-    async def _write(self, unit, address, value, func):
-        """Read generic with error handling."""
-        await self._connect_delay()
-        async with self._lock:
-            kwargs = {"unit": unit} if unit else {}
-            try:
-                async with timeout(self._config_timeout):
-                    func(address, value, **kwargs)
-            except asyncio.TimeoutError:
-                return
+    def connect(self):
+        """Connect client."""
+        with self._lock:
+            self._client.connect()
 
-    async def read_coils(self, unit, address, count):
+    def read_coils(self, unit, address, count):
         """Read coils."""
-        if self._client.protocol is None:
-            return None
-        return await self._read(unit, address, count, self._client.protocol.read_coils)
+        with self._lock:
+            kwargs = {"unit": unit} if unit else {}
+            return self._client.read_coils(address, count, **kwargs)
 
-    async def read_discrete_inputs(self, unit, address, count):
+    def read_discrete_inputs(self, unit, address, count):
         """Read discrete inputs."""
-        if self._client.protocol is None:
-            return None
-        return await self._read(
-            unit, address, count, self._client.protocol.read_discrete_inputs
-        )
+        with self._lock:
+            kwargs = {"unit": unit} if unit else {}
+            return self._client.read_discrete_inputs(address, count, **kwargs)
 
-    async def read_input_registers(self, unit, address, count):
+    def read_input_registers(self, unit, address, count):
         """Read input registers."""
-        if self._client.protocol is None:
-            return None
-        return await self._read(
-            unit, address, count, self._client.protocol.read_input_registers
-        )
+        with self._lock:
+            kwargs = {"unit": unit} if unit else {}
+            return self._client.read_input_registers(address, count, **kwargs)
 
-    async def read_holding_registers(self, unit, address, count):
+    def read_holding_registers(self, unit, address, count):
         """Read holding registers."""
-        if self._client.protocol is None:
-            return None
-        return await self._read(
-            unit, address, count, self._client.protocol.read_holding_registers
-        )
+        with self._lock:
+            kwargs = {"unit": unit} if unit else {}
+            return self._client.read_holding_registers(address, count, **kwargs)
 
-    async def write_coil(self, unit, address, value):
+    def write_coil(self, unit, address, value):
         """Write coil."""
-        if self._client.protocol is None:
-            return None
-        return await self._write(unit, address, value, self._client.protocol.write_coil)
+        with self._lock:
+            kwargs = {"unit": unit} if unit else {}
+            self._client.write_coil(address, value, **kwargs)
 
-    async def write_register(self, unit, address, value):
+    def write_register(self, unit, address, value):
         """Write register."""
-        if self._client.protocol is None:
-            return None
-        return await self._write(
-            unit, address, value, self._client.protocol.write_register
-        )
+        with self._lock:
+            kwargs = {"unit": unit} if unit else {}
+            self._client.write_register(address, value, **kwargs)
 
-    async def write_registers(self, unit, address, values):
+    def write_registers(self, unit, address, values):
         """Write registers."""
-        if self._client.protocol is None:
-            return None
-        return await self._write(
-            unit, address, values, self._client.protocol.write_registers
-        )
+        with self._lock:
+            kwargs = {"unit": unit} if unit else {}
+            self._client.write_registers(address, values, **kwargs)
diff --git a/homeassistant/components/modbus/binary_sensor.py b/homeassistant/components/modbus/binary_sensor.py
index 9989b9d530a..5f80813d108 100644
--- a/homeassistant/components/modbus/binary_sensor.py
+++ b/homeassistant/components/modbus/binary_sensor.py
@@ -2,7 +2,7 @@
 import logging
 from typing import Optional
 
-from pymodbus.exceptions import ModbusException
+from pymodbus.exceptions import ConnectionException, ModbusException
 from pymodbus.pdu import ExceptionResponse
 import voluptuous as vol
 
@@ -54,7 +54,7 @@ PLATFORM_SCHEMA = vol.All(
 )
 
 
-async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
+def setup_platform(hass, config, add_entities, discovery_info=None):
     """Set up the Modbus binary sensors."""
     sensors = []
     for entry in config[CONF_INPUTS]:
@@ -70,7 +70,7 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
             )
         )
 
-    async_add_entities(sensors)
+    add_entities(sensors)
 
 
 class ModbusBinarySensor(BinarySensorDevice):
@@ -107,15 +107,17 @@ class ModbusBinarySensor(BinarySensorDevice):
         """Return True if entity is available."""
         return self._available
 
-    async def async_update(self):
+    def update(self):
         """Update the state of the sensor."""
-        if self._input_type == CALL_TYPE_COIL:
-            result = await self._hub.read_coils(self._slave, self._address, 1)
-        else:
-            result = await self._hub.read_discrete_inputs(self._slave, self._address, 1)
-        if result is None:
+        try:
+            if self._input_type == CALL_TYPE_COIL:
+                result = self._hub.read_coils(self._slave, self._address, 1)
+            else:
+                result = self._hub.read_discrete_inputs(self._slave, self._address, 1)
+        except ConnectionException:
             self._available = False
             return
+
         if isinstance(result, (ModbusException, ExceptionResponse)):
             self._available = False
             return
diff --git a/homeassistant/components/modbus/climate.py b/homeassistant/components/modbus/climate.py
index e5fbcf4d421..5cfd9c36967 100644
--- a/homeassistant/components/modbus/climate.py
+++ b/homeassistant/components/modbus/climate.py
@@ -3,7 +3,7 @@ import logging
 import struct
 from typing import Optional
 
-from pymodbus.exceptions import ModbusException
+from pymodbus.exceptions import ConnectionException, ModbusException
 from pymodbus.pdu import ExceptionResponse
 import voluptuous as vol
 
@@ -72,7 +72,7 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 )
 
 
-async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
+def setup_platform(hass, config, add_entities, discovery_info=None):
     """Set up the Modbus Thermostat Platform."""
     name = config[CONF_NAME]
     modbus_slave = config[CONF_SLAVE]
@@ -91,7 +91,7 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
     hub_name = config[CONF_HUB]
     hub = hass.data[MODBUS_DOMAIN][hub_name]
 
-    async_add_entities(
+    add_entities(
         [
             ModbusThermostat(
                 hub,
@@ -170,12 +170,12 @@ class ModbusThermostat(ClimateDevice):
         """Return the list of supported features."""
         return SUPPORT_TARGET_TEMPERATURE
 
-    async def async_update(self):
+    def update(self):
         """Update Target & Current Temperature."""
-        self._target_temperature = await self._read_register(
+        self._target_temperature = self._read_register(
             CALL_TYPE_REGISTER_HOLDING, self._target_temperature_register
         )
-        self._current_temperature = await self._read_register(
+        self._current_temperature = self._read_register(
             self._current_temperature_register_type, self._current_temperature_register
         )
 
@@ -224,7 +224,7 @@ class ModbusThermostat(ClimateDevice):
         """Return the supported step of target temperature."""
         return self._temp_step
 
-    async def set_temperature(self, **kwargs):
+    def set_temperature(self, **kwargs):
         """Set new target temperature."""
         target_temperature = int(
             (kwargs.get(ATTR_TEMPERATURE) - self._offset) / self._scale
@@ -233,26 +233,28 @@ class ModbusThermostat(ClimateDevice):
             return
         byte_string = struct.pack(self._structure, target_temperature)
         register_value = struct.unpack(">h", byte_string[0:2])[0]
-        await self._write_register(self._target_temperature_register, register_value)
+        self._write_register(self._target_temperature_register, register_value)
 
     @property
     def available(self) -> bool:
         """Return True if entity is available."""
         return self._available
 
-    async def _read_register(self, register_type, register) -> Optional[float]:
+    def _read_register(self, register_type, register) -> Optional[float]:
         """Read register using the Modbus hub slave."""
-        if register_type == CALL_TYPE_REGISTER_INPUT:
-            result = await self._hub.read_input_registers(
-                self._slave, register, self._count
-            )
-        else:
-            result = await self._hub.read_holding_registers(
-                self._slave, register, self._count
-            )
-        if result is None:
+        try:
+            if register_type == CALL_TYPE_REGISTER_INPUT:
+                result = self._hub.read_input_registers(
+                    self._slave, register, self._count
+                )
+            else:
+                result = self._hub.read_holding_registers(
+                    self._slave, register, self._count
+                )
+        except ConnectionException:
             self._available = False
             return
+
         if isinstance(result, (ModbusException, ExceptionResponse)):
             self._available = False
             return
@@ -269,7 +271,12 @@ class ModbusThermostat(ClimateDevice):
 
         return register_value
 
-    async def _write_register(self, register, value):
+    def _write_register(self, register, value):
         """Write holding register using the Modbus hub slave."""
-        await self._hub.write_registers(self._slave, register, [value, 0])
+        try:
+            self._hub.write_registers(self._slave, register, [value, 0])
+        except ConnectionException:
+            self._available = False
+            return
+
         self._available = True
diff --git a/homeassistant/components/modbus/manifest.json b/homeassistant/components/modbus/manifest.json
index d1d2a9db550..a9155c7b628 100644
--- a/homeassistant/components/modbus/manifest.json
+++ b/homeassistant/components/modbus/manifest.json
@@ -3,6 +3,5 @@
   "name": "Modbus",
   "documentation": "https://www.home-assistant.io/integrations/modbus",
   "requirements": ["pymodbus==2.3.0"],
-  "dependencies": [],
   "codeowners": ["@adamchengtkc", "@janiversen"]
 }
diff --git a/homeassistant/components/modbus/sensor.py b/homeassistant/components/modbus/sensor.py
index 988d495eba5..8c475a114eb 100644
--- a/homeassistant/components/modbus/sensor.py
+++ b/homeassistant/components/modbus/sensor.py
@@ -3,7 +3,7 @@ import logging
 import struct
 from typing import Any, Optional, Union
 
-from pymodbus.exceptions import ModbusException
+from pymodbus.exceptions import ConnectionException, ModbusException
 from pymodbus.pdu import ExceptionResponse
 import voluptuous as vol
 
@@ -89,7 +89,7 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 )
 
 
-async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
+def setup_platform(hass, config, add_entities, discovery_info=None):
     """Set up the Modbus sensors."""
     sensors = []
     data_types = {DATA_TYPE_INT: {1: "h", 2: "i", 4: "q"}}
@@ -148,7 +148,7 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
 
     if not sensors:
         return False
-    async_add_entities(sensors)
+    add_entities(sensors)
 
 
 class ModbusRegisterSensor(RestoreEntity):
@@ -219,19 +219,21 @@ class ModbusRegisterSensor(RestoreEntity):
         """Return True if entity is available."""
         return self._available
 
-    async def async_update(self):
+    def update(self):
         """Update the state of the sensor."""
-        if self._register_type == CALL_TYPE_REGISTER_INPUT:
-            result = await self._hub.read_input_registers(
-                self._slave, self._register, self._count
-            )
-        else:
-            result = await self._hub.read_holding_registers(
-                self._slave, self._register, self._count
-            )
-        if result is None:
+        try:
+            if self._register_type == CALL_TYPE_REGISTER_INPUT:
+                result = self._hub.read_input_registers(
+                    self._slave, self._register, self._count
+                )
+            else:
+                result = self._hub.read_holding_registers(
+                    self._slave, self._register, self._count
+                )
+        except ConnectionException:
             self._available = False
             return
+
         if isinstance(result, (ModbusException, ExceptionResponse)):
             self._available = False
             return
diff --git a/homeassistant/components/modbus/switch.py b/homeassistant/components/modbus/switch.py
index e4ec6a004fb..97a5d00a30f 100644
--- a/homeassistant/components/modbus/switch.py
+++ b/homeassistant/components/modbus/switch.py
@@ -2,7 +2,7 @@
 import logging
 from typing import Optional
 
-from pymodbus.exceptions import ModbusException
+from pymodbus.exceptions import ConnectionException, ModbusException
 from pymodbus.pdu import ExceptionResponse
 import voluptuous as vol
 
@@ -76,7 +76,7 @@ PLATFORM_SCHEMA = vol.All(
 )
 
 
-async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
+def setup_platform(hass, config, add_entities, discovery_info=None):
     """Read configuration and create Modbus devices."""
     switches = []
     if CONF_COILS in config:
@@ -109,7 +109,7 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
                 )
             )
 
-    async_add_entities(switches)
+    add_entities(switches)
 
 
 class ModbusCoilSwitch(ToggleEntity, RestoreEntity):
@@ -146,24 +146,26 @@ class ModbusCoilSwitch(ToggleEntity, RestoreEntity):
         """Return True if entity is available."""
         return self._available
 
-    async def turn_on(self, **kwargs):
+    def turn_on(self, **kwargs):
         """Set switch on."""
-        await self._write_coil(self._coil, True)
+        self._write_coil(self._coil, True)
 
-    async def turn_off(self, **kwargs):
+    def turn_off(self, **kwargs):
         """Set switch off."""
-        await self._write_coil(self._coil, False)
+        self._write_coil(self._coil, False)
 
-    async def async_update(self):
+    def update(self):
         """Update the state of the switch."""
-        self._is_on = await self._read_coil(self._coil)
+        self._is_on = self._read_coil(self._coil)
 
-    async def _read_coil(self, coil) -> Optional[bool]:
+    def _read_coil(self, coil) -> Optional[bool]:
         """Read coil using the Modbus hub slave."""
-        result = await self._hub.read_coils(self._slave, coil, 1)
-        if result is None:
+        try:
+            result = self._hub.read_coils(self._slave, coil, 1)
+        except ConnectionException:
             self._available = False
             return
+
         if isinstance(result, (ModbusException, ExceptionResponse)):
             self._available = False
             return
@@ -173,9 +175,14 @@ class ModbusCoilSwitch(ToggleEntity, RestoreEntity):
 
         return value
 
-    async def _write_coil(self, coil, value):
+    def _write_coil(self, coil, value):
         """Write coil using the Modbus hub slave."""
-        await self._hub.write_coil(self._slave, coil, value)
+        try:
+            self._hub.write_coil(self._slave, coil, value)
+        except ConnectionException:
+            self._available = False
+            return
+
         self._available = True
 
 
@@ -221,21 +228,21 @@ class ModbusRegisterSwitch(ModbusCoilSwitch):
 
         self._is_on = None
 
-    async def turn_on(self, **kwargs):
+    def turn_on(self, **kwargs):
         """Set switch on."""
 
         # Only holding register is writable
         if self._register_type == CALL_TYPE_REGISTER_HOLDING:
-            await self._write_register(self._command_on)
+            self._write_register(self._command_on)
             if not self._verify_state:
                 self._is_on = True
 
-    async def turn_off(self, **kwargs):
+    def turn_off(self, **kwargs):
         """Set switch off."""
 
         # Only holding register is writable
         if self._register_type == CALL_TYPE_REGISTER_HOLDING:
-            await self._write_register(self._command_off)
+            self._write_register(self._command_off)
             if not self._verify_state:
                 self._is_on = False
 
@@ -244,12 +251,12 @@ class ModbusRegisterSwitch(ModbusCoilSwitch):
         """Return True if entity is available."""
         return self._available
 
-    async def async_update(self):
+    def update(self):
         """Update the state of the switch."""
         if not self._verify_state:
             return
 
-        value = await self._read_register()
+        value = self._read_register()
         if value == self._state_on:
             self._is_on = True
         elif value == self._state_off:
@@ -263,18 +270,18 @@ class ModbusRegisterSwitch(ModbusCoilSwitch):
                 value,
             )
 
-    async def _read_register(self) -> Optional[int]:
-        if self._register_type == CALL_TYPE_REGISTER_INPUT:
-            result = await self._hub.read_input_registers(
-                self._slave, self._register, 1
-            )
-        else:
-            result = await self._hub.read_holding_registers(
-                self._slave, self._register, 1
-            )
-        if result is None:
+    def _read_register(self) -> Optional[int]:
+        try:
+            if self._register_type == CALL_TYPE_REGISTER_INPUT:
+                result = self._hub.read_input_registers(self._slave, self._register, 1)
+            else:
+                result = self._hub.read_holding_registers(
+                    self._slave, self._register, 1
+                )
+        except ConnectionException:
             self._available = False
             return
+
         if isinstance(result, (ModbusException, ExceptionResponse)):
             self._available = False
             return
@@ -284,7 +291,12 @@ class ModbusRegisterSwitch(ModbusCoilSwitch):
 
         return value
 
-    async def _write_register(self, value):
+    def _write_register(self, value):
         """Write holding register using the Modbus hub slave."""
-        await self._hub.write_register(self._slave, self._register, value)
+        try:
+            self._hub.write_register(self._slave, self._register, value)
+        except ConnectionException:
+            self._available = False
+            return
+
         self._available = True
diff --git a/homeassistant/components/nexia/__init__.py b/homeassistant/components/nexia/__init__.py
index 5c317794c2a..a9c04933674 100644
--- a/homeassistant/components/nexia/__init__.py
+++ b/homeassistant/components/nexia/__init__.py
@@ -60,6 +60,8 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
     username = conf[CONF_USERNAME]
     password = conf[CONF_PASSWORD]
 
+    state_file = hass.config.path(f"nexia_config_{username}.conf")
+
     try:
         nexia_home = await hass.async_add_executor_job(
             partial(
@@ -67,6 +69,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
                 username=username,
                 password=password,
                 device_name=hass.config.location_name,
+                state_file=state_file,
             )
         )
     except ConnectTimeout as ex:
diff --git a/homeassistant/components/nexia/config_flow.py b/homeassistant/components/nexia/config_flow.py
index 5844cb8da20..59f1b211da5 100644
--- a/homeassistant/components/nexia/config_flow.py
+++ b/homeassistant/components/nexia/config_flow.py
@@ -20,6 +20,8 @@ async def validate_input(hass: core.HomeAssistant, data):
 
     Data has the keys from DATA_SCHEMA with values provided by the user.
     """
+
+    state_file = hass.config.path(f"nexia_config_{data[CONF_USERNAME]}.conf")
     try:
         nexia_home = NexiaHome(
             username=data[CONF_USERNAME],
@@ -27,6 +29,7 @@ async def validate_input(hass: core.HomeAssistant, data):
             auto_login=False,
             auto_update=False,
             device_name=hass.config.location_name,
+            state_file=state_file,
         )
         await hass.async_add_executor_job(nexia_home.login)
     except ConnectTimeout as ex:
diff --git a/homeassistant/components/nexia/manifest.json b/homeassistant/components/nexia/manifest.json
index a58330ad227..f09d4d1a4d1 100644
--- a/homeassistant/components/nexia/manifest.json
+++ b/homeassistant/components/nexia/manifest.json
@@ -1,7 +1,7 @@
 {
   "domain": "nexia",
   "name": "Nexia",
-  "requirements": ["nexia==0.9.1"],
+  "requirements": ["nexia==0.9.2"],
   "codeowners": ["@ryannazaretian", "@bdraco"],
   "documentation": "https://www.home-assistant.io/integrations/nexia",
   "config_flow": true
diff --git a/homeassistant/components/nut/config_flow.py b/homeassistant/components/nut/config_flow.py
index 04889bb3f3f..0721ea10f94 100644
--- a/homeassistant/components/nut/config_flow.py
+++ b/homeassistant/components/nut/config_flow.py
@@ -99,7 +99,9 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
     def _host_port_alias_already_configured(self, host, port, alias):
         """See if we already have a nut entry matching user input configured."""
         existing_host_port_aliases = {
-            _format_host_port_alias(host, port, alias)
+            _format_host_port_alias(
+                entry.data[CONF_HOST], entry.data[CONF_PORT], entry.data.get(CONF_ALIAS)
+            )
             for entry in self._async_current_entries()
         }
         return _format_host_port_alias(host, port, alias) in existing_host_port_aliases
diff --git a/homeassistant/const.py b/homeassistant/const.py
index 33e0c685d26..6eab813b67d 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -1,7 +1,7 @@
 """Constants used by Home Assistant components."""
 MAJOR_VERSION = 0
 MINOR_VERSION = 108
-PATCH_VERSION = "6"
+PATCH_VERSION = "7"
 __short_version__ = f"{MAJOR_VERSION}.{MINOR_VERSION}"
 __version__ = f"{__short_version__}.{PATCH_VERSION}"
 REQUIRED_PYTHON_VER = (3, 7, 0)
diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 92564cd6781..434881ea79a 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -11,7 +11,7 @@ ciso8601==2.1.3
 cryptography==2.8
 defusedxml==0.6.0
 distro==1.4.0
-hass-nabucasa==0.32.2
+hass-nabucasa==0.33.0
 home-assistant-frontend==20200407.2
 importlib-metadata==1.5.0
 jinja2>=2.11.1
diff --git a/requirements_all.txt b/requirements_all.txt
index ca6bd795b82..606a5bc73b6 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -674,7 +674,7 @@ habitipy==0.2.0
 hangups==0.4.9
 
 # homeassistant.components.cloud
-hass-nabucasa==0.32.2
+hass-nabucasa==0.33.0
 
 # homeassistant.components.mqtt
 hbmqtt==0.9.5
@@ -922,7 +922,7 @@ netdisco==2.6.0
 neurio==0.3.1
 
 # homeassistant.components.nexia
-nexia==0.9.1
+nexia==0.9.2
 
 # homeassistant.components.nextcloud
 nextcloudmonitor==1.1.0
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index c71b77b0008..ccbdc92b90a 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -264,7 +264,7 @@ ha-ffmpeg==2.0
 hangups==0.4.9
 
 # homeassistant.components.cloud
-hass-nabucasa==0.32.2
+hass-nabucasa==0.33.0
 
 # homeassistant.components.mqtt
 hbmqtt==0.9.5
@@ -357,7 +357,7 @@ nessclient==0.9.15
 netdisco==2.6.0
 
 # homeassistant.components.nexia
-nexia==0.9.1
+nexia==0.9.2
 
 # homeassistant.components.nsw_fuel_station
 nsw-fuel-api-client==1.0.10
diff --git a/tests/components/alexa/test_smart_home.py b/tests/components/alexa/test_smart_home.py
index a0d40460373..293727b4294 100644
--- a/tests/components/alexa/test_smart_home.py
+++ b/tests/components/alexa/test_smart_home.py
@@ -3806,9 +3806,9 @@ async def test_camera_discovery_without_stream(hass):
     "url,result",
     [
         ("http://nohttpswrongport.org:8123", 2),
-        ("https://httpswrongport.org:8123", 2),
         ("http://nohttpsport443.org:443", 2),
         ("tls://nohttpsport443.org:443", 2),
+        ("https://httpsnnonstandport.org:8123", 3),
         ("https://correctschemaandport.org:443", 3),
         ("https://correctschemaandport.org", 3),
     ],
diff --git a/tests/components/cloud/test_binary_sensor.py b/tests/components/cloud/test_binary_sensor.py
index 24b0563890b..c4ad22abb2f 100644
--- a/tests/components/cloud/test_binary_sensor.py
+++ b/tests/components/cloud/test_binary_sensor.py
@@ -1,24 +1,23 @@
 """Tests for the cloud binary sensor."""
 from unittest.mock import Mock
 
+from asynctest import patch
+
 from homeassistant.components.cloud.const import DISPATCHER_REMOTE_UPDATE
 from homeassistant.setup import async_setup_component
 
 
 async def test_remote_connection_sensor(hass):
     """Test the remote connection sensor."""
-    from homeassistant.components.cloud import binary_sensor as bin_sensor
-
-    bin_sensor.WAIT_UNTIL_CHANGE = 0
-
     assert await async_setup_component(hass, "cloud", {"cloud": {}})
     await hass.async_block_till_done()
 
     assert hass.states.get("binary_sensor.remote_ui") is None
 
     # Fake connection/discovery
-    org_cloud = hass.data["cloud"]
-    await org_cloud.iot._on_connect[-1]()
+    await hass.helpers.discovery.async_load_platform(
+        "binary_sensor", "cloud", {}, {"cloud": {}}
+    )
 
     # Mock test env
     cloud = hass.data["cloud"] = Mock()
@@ -29,17 +28,18 @@ async def test_remote_connection_sensor(hass):
     assert state is not None
     assert state.state == "unavailable"
 
-    cloud.remote.is_connected = False
-    cloud.remote.certificate = object()
-    hass.helpers.dispatcher.async_dispatcher_send(DISPATCHER_REMOTE_UPDATE, {})
-    await hass.async_block_till_done()
+    with patch("homeassistant.components.cloud.binary_sensor.WAIT_UNTIL_CHANGE", 0):
+        cloud.remote.is_connected = False
+        cloud.remote.certificate = object()
+        hass.helpers.dispatcher.async_dispatcher_send(DISPATCHER_REMOTE_UPDATE, {})
+        await hass.async_block_till_done()
 
-    state = hass.states.get("binary_sensor.remote_ui")
-    assert state.state == "off"
+        state = hass.states.get("binary_sensor.remote_ui")
+        assert state.state == "off"
 
-    cloud.remote.is_connected = True
-    hass.helpers.dispatcher.async_dispatcher_send(DISPATCHER_REMOTE_UPDATE, {})
-    await hass.async_block_till_done()
+        cloud.remote.is_connected = True
+        hass.helpers.dispatcher.async_dispatcher_send(DISPATCHER_REMOTE_UPDATE, {})
+        await hass.async_block_till_done()
 
-    state = hass.states.get("binary_sensor.remote_ui")
-    assert state.state == "on"
+        state = hass.states.get("binary_sensor.remote_ui")
+        assert state.state == "on"
diff --git a/tests/components/cloud/test_init.py b/tests/components/cloud/test_init.py
index 9dd8695b9b2..10a7bc38c05 100644
--- a/tests/components/cloud/test_init.py
+++ b/tests/components/cloud/test_init.py
@@ -6,7 +6,7 @@ import pytest
 from homeassistant.components import cloud
 from homeassistant.components.cloud.const import DOMAIN
 from homeassistant.components.cloud.prefs import STORAGE_KEY
-from homeassistant.const import EVENT_HOMEASSISTANT_START, EVENT_HOMEASSISTANT_STOP
+from homeassistant.const import EVENT_HOMEASSISTANT_STOP
 from homeassistant.core import Context
 from homeassistant.exceptions import Unauthorized
 from homeassistant.setup import async_setup_component
@@ -103,12 +103,6 @@ async def test_remote_services(hass, mock_cloud_fixture, hass_read_only_user):
 
 async def test_startup_shutdown_events(hass, mock_cloud_fixture):
     """Test if the cloud will start on startup event."""
-    with patch("hass_nabucasa.Cloud.start", return_value=mock_coro()) as mock_start:
-        hass.bus.async_fire(EVENT_HOMEASSISTANT_START)
-        await hass.async_block_till_done()
-
-    assert mock_start.called
-
     with patch("hass_nabucasa.Cloud.stop", return_value=mock_coro()) as mock_stop:
         hass.bus.async_fire(EVENT_HOMEASSISTANT_STOP)
         await hass.async_block_till_done()
diff --git a/tests/components/modbus/conftest.py b/tests/components/modbus/conftest.py
index d9cd62313b4..814e59e5571 100644
--- a/tests/components/modbus/conftest.py
+++ b/tests/components/modbus/conftest.py
@@ -40,19 +40,11 @@ class ReadResult:
         self.registers = register_words
 
 
-read_result = None
-
-
 async def run_test(
     hass, use_mock_hub, register_config, entity_domain, register_words, expected
 ):
     """Run test for given config and check that sensor outputs expected result."""
 
-    async def simulate_read_registers(unit, address, count):
-        """Simulate modbus register read."""
-        del unit, address, count  # not used in simulation, but in real connection
-        return read_result
-
     # Full sensor configuration
     sensor_name = "modbus_test_sensor"
     scan_interval = 5
@@ -69,9 +61,9 @@ async def run_test(
     # Setup inputs for the sensor
     read_result = ReadResult(register_words)
     if register_config.get(CONF_REGISTER_TYPE) == CALL_TYPE_REGISTER_INPUT:
-        use_mock_hub.read_input_registers = simulate_read_registers
+        use_mock_hub.read_input_registers.return_value = read_result
     else:
-        use_mock_hub.read_holding_registers = simulate_read_registers
+        use_mock_hub.read_holding_registers.return_value = read_result
 
     # Initialize sensor
     now = dt_util.utcnow()
diff --git a/tests/components/nut/test_config_flow.py b/tests/components/nut/test_config_flow.py
index 362f6c0b2ba..2ffc470ccf0 100644
--- a/tests/components/nut/test_config_flow.py
+++ b/tests/components/nut/test_config_flow.py
@@ -4,6 +4,8 @@ from asynctest import MagicMock, patch
 from homeassistant import config_entries, setup
 from homeassistant.components.nut.const import DOMAIN
 
+from tests.common import MockConfigEntry
+
 
 def _get_mock_pynutclient(list_vars=None):
     pynutclient = MagicMock()
@@ -62,6 +64,12 @@ async def test_form_import(hass):
     """Test we get the form with import source."""
     await setup.async_setup_component(hass, "persistent_notification", {})
 
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={"host": "2.2.2.2", "port": 123, "resources": ["battery.charge"]},
+    )
+    config_entry.add_to_hass(hass)
+
     mock_pynut = _get_mock_pynutclient(list_vars={"battery.voltage": "serial"})
 
     with patch(
@@ -92,7 +100,7 @@ async def test_form_import(hass):
     }
     await hass.async_block_till_done()
     assert len(mock_setup.mock_calls) == 1
-    assert len(mock_setup_entry.mock_calls) == 1
+    assert len(mock_setup_entry.mock_calls) == 2
 
 
 async def test_form_cannot_connect(hass):