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Matter device offline or not responding? How to fix it on Apple Home, Google Home, Alexa, SmartThings and Home Assistant

"Offline", "No Response", "unresponsive" and "unavailable" are different apps' words for the same problem: the app or its hub isn't reaching the device right now (Home Assistant's network map defines Offline as "a device that is currently not reachable"). The platforms' own troubleshooting pages each list checks to work through — power and batteries, the hub or controller, the phone's Wi-Fi network, restarting the device, hub and router — and put removing and re-adding the device after them. Don't factory reset first. Apple's support page and Google's help page are good places to start.

What "offline", "No Response" and "unavailable" mean

Each platform uses its own wording. Apple's support page says "No Response" appears next to an accessory that isn't responding. Google's help page has a "Device appears offline" section, and Google's developer documentation describes a device state called OFFLINE. Amazon's troubleshooting page says smart home devices "aren't responding to commands or are responding intermittently", and its Echo Hub page uses the word "unresponsive". SmartThings says a Matter device may "fall offline" or be "unavailable" on its Matter integration page, while Samsung's troubleshooting page describes a status that "shows as Offline" or "Disconnected". Home Assistant's Matter docs say devices can "become unavailable randomly", and its Matter network map marks unreachable devices as "Offline".

Google's developer table is useful for narrowing things down: a device can be OFFLINE while the hub is ONLINE, which points at the device's own power, or the hub itself can be OFFLINE, which points at the hub. Apple's page splits its steps into two cases — accessories from one manufacturer aren't responding, or accessories from several manufacturers aren't responding. Notice which applies to you: Apple's several-manufacturers list adds checks on your iPhone, iPad or Mac, its Wi-Fi network, your modem and router, and your home hubs.

Fixes at a glance

Here's what each app shows and where its own fix list starts:

The table lists each platform's own first steps and the hub or controller MatterCheck's checks list. For more on hubs and Thread border routers, see Matter hubs and Thread border routers.

Start with these checks on any platform

Work through these in order, and test after each step — Apple's page says to check whether accessories are responding in the Home app after each step.

1. Power and batteries. IKEA's support page says the most common reason a product goes offline is a lack of power — for smart lights, check the switch is on. SmartThings' Matter page notes that some battery-powered devices may begin to fail before they reach 0%.
2. One device or many? Apple's page splits its steps by whether accessories from one manufacturer or several manufacturers aren't responding. The several-manufacturers list adds checks on your phone, its Wi-Fi network, the router and the home hubs.
3. The hub or controller is on and on your home Wi-Fi. Apple's home hub page says to check the hub is in your home, connected to your home Wi-Fi and powered on. Google's developer table says to ensure the hub is plugged in when the hub state is OFFLINE. Samsung's page warns that a flashing or solid magenta LED means the hub is updating — don't unplug or reboot it during that time.
4. Your phone on the same Wi-Fi. Apple, Google and IKEA all list this. Apple's page says to connect your iPhone, iPad or Mac to the same Wi-Fi network as your accessories. Google's developer table says that when you're home and a device is offline, make sure the phone is connected to the same Wi-Fi as the Matter device. IKEA's FAQ says to make sure your mobile phone uses the same Wi-Fi network as the hub.
5. Restart in order. IKEA's FAQ gives an order: restart the Wi-Fi router, then the DIRIGERA hub, then turn your mobile phone off and on again. Apple's several-manufacturers steps end, if accessories still aren't responding, with restarts in this order: unplug the modem and router, then unplug third-party bridges and all home hubs, then restart accessories, then restart your iPhone, iPad or Mac.
6. Check the maker's app and firmware. Apple's page says to check the manufacturer's app to see whether accessories need a firmware update. Google's page asks whether your devices are updated with their manufacturer's latest firmware.

Common causes and what to check

The sources name these causes and checks:

The sources give checks to work through, not a single cause, so work down the list and test after each step. Apple's page says to check after each step.

Fix it on each platform

Apple Home: "No Response"

Apple's support page splits its steps into two lists. If accessories from one manufacturer aren't responding: turn on Bluetooth, restart the accessories, check the manufacturer's app for firmware updates, restart third-party bridges and all home hubs, disconnect third-party Thread accessories from power for 5 minutes and wait 10 minutes for the Thread network to stabilize, then remove the accessory from the Home app and follow the manufacturer's instructions to reset and add it again. If accessories from several manufacturers aren't responding: update your Apple device, close and reopen the Home app, connect to the same Wi-Fi network as your accessories, set up a home hub for remote control, turn on Bluetooth, restart accessories, check the manufacturer's app for a firmware update, disconnect third-party Thread accessories for 5 minutes and wait 10, then restart your modem and router, bridges and home hubs, accessories and Apple device in that order. Apple also says to check VPN and third-party security software for network connectivity issues.

Apple's older home hub page (published 2025-09-15) says you must set up a home hub to add Matter accessories to the Home app, and Thread-enabled Matter accessories require a Thread-enabled home hub or a supported third-party border router. Apple's newer Matter accessories page (published 2026-05-07) says an iPhone on iOS 18 or later can add and control Matter accessories without a home hub, and iPhone 15 Pro or later can control Thread-based accessories without one, but Apple still recommends setting up a home hub. Either way, a home hub is what lets you control accessories when you're away. You can view your active home hub in Home Settings > Home Hubs & Bridges. If your home hub isn't working, Apple says to update and restart it, and check that it's in your home, connected to your home Wi-Fi network and powered on. See MatterCheck's Apple Home support guide for more.

Google Home: device offline

Google's help page lists checks first: is the device plugged in and powered on, are your devices on the same Wi-Fi network, are they in the same home in the Google Home app, are they updated with the manufacturer's latest firmware, and are you in the same room as the device. For "Device appears offline", it says to reconnect the device's power cable — unplug it, wait one to two minutes, then plug it back in — and reboot your Wi-Fi router. The unlink and relink steps on that page are for devices linked through Works with Google, a partner account link, not for devices added directly over Matter.

Google's developer table covers hub cases: if the device is OFFLINE but the hub is ONLINE, ensure the device is plugged in; if both are OFFLINE, ensure the hub is plugged in. If it's the Google speaker or display you use as your hub that isn't available, Google's "Fix device is not available" page applies: it's written for Google Nest and Home speakers and displays, not for other makers' Matter devices, and says to check that your phone or tablet is on the same Wi-Fi network as that speaker or display, then disconnect and reconnect its power cable. See MatterCheck's Google Home support guide for more.

Alexa: not responding or unresponsive

Amazon's troubleshooting page lists these checks: make sure the smart home device is on, and try new batteries if it's battery-operated; make sure your Alexa device and the Alexa app have the latest software; if the device uses a skill, try controlling it with the manufacturer's app; move your Alexa device at least 6 ft (2 m) away from your router; Matter Wi-Fi devices must connect on the same 2.4 GHz Wi-Fi network as your compatible Matter controller; and for Matter devices, make sure the device is within 30 ft (9 m) of your compatible Matter controller. Amazon says to try resetting your Alexa device and smart home device if those steps don't work.

Amazon's Echo Hub page says that if a device is unresponsive or shows the incorrect state, select the device's tile on the Echo Hub to force a refresh. Most devices refresh their state every minute or so, while some refresh after several minutes. If it still shows as unresponsive, check the device state in the manufacturer's app and consult the manufacturer's instructions. See MatterCheck's Alexa support guide for more.

SmartThings: offline or unavailable

SmartThings' Matter integration page lists six steps in order: check the device is within range of a supported Matter controller with no obstructions; power the device off and on again; restart the SmartThings app; check the device is receiving adequate power (battery-powered devices may fail before 0%, and wall-powered devices should be installed to the manufacturer's specifications); power cycle the connected Matter controller; then remove and re-add the Matter device. For Thread devices using a third-party Thread border router, the SmartThings hub and the border router must be on the same Wi-Fi/LAN network.

Samsung's troubleshooting page adds hub checks: a flashing or solid magenta LED means the hub is updating — don't unplug it; check the range between the hub and device; keep the hub away from the Wi-Fi router and other wireless electronics; and for Wi-Fi devices, verify the device is on the same network as the hub. For the case where all devices connected to the hub aren't responding, Samsung's last section starts by removing all locations, automations and devices (including the hub) that are causing issues. That section comes after Samsung's general checks, so it isn't a first fix. See MatterCheck's SmartThings support guide for more.

Home Assistant: unavailable

Home Assistant's Matter docs name a specific cause for devices becoming unavailable randomly: the Matter protocol relies on local IPv6 and mDNS (multicast traffic) traveling freely in your network. Matter is designed for regular residential network setups and may not integrate well with enterprise networking features like VLANs, multicast filtering and malfunctioning IGMP snooping. The remedy: make sure Matter devices that use Wi-Fi, including Thread border routers, are on the same VLAN as Home Assistant; make sure Thread-only devices are joined to Thread networks with at least one border router connected to the Home Assistant LAN; and keep your network topology as simple and flat as possible. A router or access point setting to "optimize" multicast traffic can harm Matter discovery traffic.

IPv6 must be enabled on Home Assistant itself — go to Settings > System > Network and set IPv6 to Automatic or static. The Matter network map (Settings > Connectivity > Matter, then under My network select Show map; it needs the Matter Server app 9.2.0 or newer) can help you find devices with a weak connection or devices that are offline. Home Assistant's Thread docs add that Thread is an IPv6-only protocol — if IPv6 support is missing at any layer, Thread devices may join the mesh but fail to communicate beyond it. See MatterCheck's Home Assistant support guide for more.

Thread devices that keep dropping off

Apple's support page says to disconnect third-party Thread accessories from power for 5 minutes, then reconnect them and wait 10 minutes for the Thread network to stabilize. Eve's support page gives its own steps for Eve devices: soft reboot the device by pulling the batteries or plug for one minute, reboot all hubs or Thread border routers by unplugging them for a minute and waiting 5 minutes, then reboot your smartphone. Eve also says not to use VPN or iCloud Private Relay. Eve notes that mains-powered Eve devices can act as router nodes within the Thread network, while battery-powered ones are endpoints — and Eve says the more of these always-on devices you have, the more stable the network and the greater its reach.

The Thread Group's FAQ says Thread's mesh network lets devices communicate directly with each other, so if a device fails, network data is rerouted through other devices. It also says you can add Thread border routers to the same network to make the mesh stronger, farther reaching and more reliable. Home Assistant's Thread docs warn that having multiple border routers from different vendors can result in separate networks using different credentials, which prevents devices from roaming between them. IKEA's FAQ says that resetting its Thread network means Matter products connected to that network will need to be reset afterwards — that's a step for IKEA's own hub, not a first fix. For more on Thread vs Wi-Fi, see Matter over Thread vs Wi-Fi.

Network settings that make Matter devices drop out

• IPv6 on the local network. Google's Matter preparation page says that without IPv6 enabled on your home wireless network, setup may initially appear to succeed but control and other functionality eventually fail. IKEA's FAQ says to check that IPv6 is enabled in your router's LAN settings; if problems persist, IKEA says you can try turning IPv6 off for WAN (the internet side) while keeping it on for the local network.
• Multicast, VLANs and IGMP snooping. Home Assistant's Matter docs say Matter relies on local IPv6 and mDNS (multicast) traffic traveling freely, and may not integrate well with VLANs, multicast filtering and (malfunctioning) IGMP snooping; a router or access point setting to "optimize" multicast traffic can harm Matter's discovery traffic.
• Guest networks. The CSA's article on primary Wi-Fi networks says Matter devices belong on your primary network — on a guest network they're isolated from controllers and other devices on the primary network, which blocks communication.
• One network name. The CSA article says it's best to use a single SSID across 2.4 GHz, 5 GHz and 6 GHz bands, and that all devices should connect to the same router; if you add a third-party router to your provider's, the CSA says you may have two independent networks and points to the router's bridged or AP mode.
• 2.4 GHz for Alexa. Amazon's troubleshooting page says Matter Wi-Fi devices must connect on the same 2.4 GHz Wi-Fi network as your compatible Matter controller.

These same settings matter at pairing time too — see Matter device not pairing.

Works at home but offline when you're away?

Google's developer table says an OFFLINE device with no hub is expected when you're away from home — you need a supported hub for remote control and automations. Google's Matter preparation page says a Matter-enabled hub lets you control devices remotely when you're away from home. Apple's support page says that to control your accessories remotely, you must set up a home hub, and its home hub page says a home hub is needed to control accessories while you're away. For what works without internet, see Matter local control without internet.

When to remove and re-add the device

Apple, SmartThings and Samsung all put remove and re-add after the restarts and other checks. Apple's page says to remove the accessory from the Home app, then follow the manufacturer's instructions to reset it and add it to the Home app again. SmartThings' Matter page lists "Remove and re-add the Matter device" as step 6, after power cycling the controller. Amazon's page says to try resetting your Alexa device and smart home device if the other steps don't work.

Before you remove or reset anything, make sure you have the device's setup code — see lost Matter setup code — and read removing and factory resetting Matter devices. If the device is shared to several apps, also see sharing Matter devices across apps. Apple and Google also list checking for firmware updates in the maker's app — see Matter firmware updates for how updates work on each platform.

Frequently asked questions

Why does my Matter device keep going offline?

The sources don't name a single cause — they list checks to work through. IKEA's FAQ says the most common reason for its products going offline is a lack of power. Home Assistant's docs point to IPv6 and multicast traffic not traveling freely on the network. Apple's page says to check after each step, so work through the lists and test as you go.

Why do my Matter devices say No Response in Apple Home (HomeKit)?

Apple's support page doesn't give a single cause for "No Response"; it splits the fixes by how many makers' accessories are affected. If it's one manufacturer's accessories, restart them, check the manufacturer's app for a firmware update and restart bridges and home hubs. If it's several manufacturers at once, check your phone's Wi-Fi network, your home hub, and restart your modem, router, bridges and hubs.

Why is my Matter device offline in Google Home?

Google's help page says to check power, Wi-Fi, firmware, whether the device is in the same home in the Google Home app and whether you're in the same room as it. Its developer table says an OFFLINE device with an ONLINE hub points at the device's power, while an OFFLINE hub points at the hub itself.

What does it mean when an Alexa device is unresponsive?

The "unresponsive" wording comes from Amazon's Echo Hub page, about device tiles on an Echo Hub: it says a device that shows no state or is unresponsive isn't communicating its state to the Echo Hub. On an Echo Hub, select the device's tile to force a refresh — most devices refresh every minute or so, some after several minutes. Amazon's troubleshooting page adds checks for power, software updates, 2.4 GHz Wi-Fi and 30 ft (9 m) range from the Matter controller.

Why are all my Matter devices unavailable in Home Assistant?

Home Assistant's Matter docs say devices can become unavailable randomly when IPv6 and mDNS multicast traffic can't travel freely on your network. The docs say Matter may not integrate well with VLANs, multicast filtering and malfunctioning IGMP snooping. Make sure Wi-Fi Matter devices and Thread border routers are on the same VLAN as Home Assistant, and keep the network topology simple and flat.

Why are my IKEA Matter devices offline?

IKEA's FAQ says the most common reason for its products going offline is a lack of power — check that light switches are on; for battery devices, IKEA's app notifies you when the battery gets low. It also says to make sure your phone is on the same Wi-Fi network as the DIRIGERA hub, restart the router, hub and phone in that order, and check that IPv6 is enabled in your router's LAN settings. IKEA's Matter page says Matter works best with strong local connectivity and an active controller.

Should I factory reset a Matter device that's offline?

No — not as a first step. Apple, SmartThings and Samsung list restarts and other checks before removing or resetting, and Amazon mentions resetting only if its other steps don't work. Apple's page puts removing and re-adding after the restart steps, and SmartThings' Matter page lists it as step 6. If you do reset, you'll need the setup code to add the device again — see what to do if you've lost it.

More MatterCheck guides

• Matter device not pairing — fixes for first-time setup failures.
• Matter hubs and Thread border routers — what each platform needs.
• Matter over Thread vs Wi-Fi — how the two transports differ.
• Matter local control without internet — what works when the internet doesn't.
• Removing and factory resetting Matter devices — how to do it safely.
• Matter firmware updates — keeping devices current.
• Lost Matter setup code — what to do if you can't find it.
• Sharing Matter devices across apps — multi-admin explained.
• Matter network setup: IPv6, VLANs and router settings — how IPv6, VLANs, mDNS and router settings affect Matter.
• Thread credentials: share, sync and combine Thread networks — how phones keep Thread credentials and how to share, sync or combine Thread networks.

How we checked

Pages fetched 2026-10-20 — Apple's support pages 102056, 102557 and 102135; Google's help pages 7073578, 9494683 (written for Google's own speakers and displays) and 12391458 and its Home APIs connectivity page; Amazon's two smart home troubleshooting pages; SmartThings' Matter integration page and Samsung US's SmartThings troubleshooting page; Home Assistant's Matter and Thread docs (2026.10.2); the CSA's primary Wi-Fi network article; the Thread Group's FAQ; and IKEA's and Eve's support pages. Steps and menus can change with app updates; maker pages apply to that maker's devices. See our methodology.

Last reviewed 2026-10-20. If a step here doesn't match your app, follow the platform's or maker's own page linked above.