Unplug the power cable from the back of the Nest Hub Max, wait a full 30 seconds, then plug it back in. That soft reboot clears most transient glitches, the device powers up, reconnects to Wi‑Fi, and should respond to “Hey Google” within a minute. It’s the fastest thing to try and fixes the majority of cases where the screen is on but the voice assistant isn’t listening.
If that didn’t do it, here are the usual culprits and how to walk through them.
Check the Physical Microphone Switch on the Back
Flip the Nest Hub Max around and look for the small sliding switch on the rear panel. When that switch is toggled to the orange position, the microphone is physically disconnected, the device won’t hear any “Hey Google” commands. The screen shows a small orange mic icon at the top right when muted. Slide it back to the non‑orange position and the mic comes back online immediately.
This is easy to bump when moving the device, especially if it sits on a kitchen counter or nightstand. Always check this first before digging into settings.
See if the Camera Mute Is On
Nest Hub Max doesn’t have a physical camera shutter, it uses a software mute instead. Swipe down from the top of the screen and tap the camera icon. If it shows a slash, the camera is off. That won’t stop voice commands, but if you’re using video‑calling features, the unresponsive behavior might be camera‑related. Just tap it again to re‑enable.
Confirm the Device Shows Online in the Google Home App
Open the Google Home app on your phone, tap your Nest Hub Max from the device list, and check the status at the top. If it says “Offline” the device lost Wi‑Fi. If it says “Online” but the screen is dark or the assistant won’t respond, the software layer that handles the wake word is stuck. Either way, the next few fixes apply.
Reconnect to Wi‑Fi via the Google Home App
If status shows offline, tap Settings > Wi‑Fi in the device’s page within the Google Home app. Choose your 5 GHz network, it’s generally more reliable than 2.4 GHz for the Hub Max, and the device supports both bands natively. Enter the password and let it reconnect. The screen will show “Connecting to Wi‑Fi…” then settle. Test “Hey Google” once the Wi‑Fi icon appears solid.
Check for a Pending Software Update
Google pushes firmware updates automatically, but sometimes a partial download hangs the assistant. Leave the Nest Hub Max plugged in and idle for about 30 minutes, it checks for updates when not in active use. Then unplug, wait 30 seconds, and plug back in. The freshly downloaded firmware installs during the boot process.
If the device becomes unresponsive again right after booting, you might have hit a firmware bug. The next fix walks through a full factory reset.
Disable or Remove Problematic Routines
A failing routine can tie up the assistant’s response. Open the Google Home app, tap Automations (or Routines), and look for any routine that recently started misbehaving, especially ones that control multiple smart home devices or involve third‑party services. Disable it temporarily and test the wake word. If responsiveness returns, that routine was causing the hang.
Check Gemini for Home Migration Status
Google is gradually migrating Nest Hub Max units from the old Assistant to Gemini for Home. If your device is enrolled in the early access program but the migration hasn’t completed, the assistant might not respond to wake words. Open the Google Home app, go to Settings > Gemini for Home. If it says “Pending” or “Not yet enabled,” you may need to wait for the rollout, or try toggling it off then back on for this specific device.
This migration is rolling out across 16+ countries as of April 2026. If your Hub Max is in a supported region, make sure the Google Home app is updated to the latest version.
Factory Reset the Nest Hub Max
If nothing else has worked, a full factory reset clears every setting, Wi‑Fi credential, and linked account. On the back of the device, press and hold both physical volume buttons simultaneously for 10 seconds. The screen will flash and the Hub Max will restart into setup mode, it’s the same as pulling it out of the box for the first time.
**This wipes everything:** all routines, Face Match data, Wi‑Fi networks, and Google account links. You’ll need to set it up again from scratch in the Google Home app.
Reboot Your Wi‑Fi Router
If multiple smart devices in your home are unresponsive at the same time, the router is the likely root cause. Unplug it for 60 seconds, plug it back in, and wait three minutes for a full restart. The Nest Hub Max should reconnect to your network automatically within a minute after the router is back up.
Gesture Control Might Be Interfering
Nest Hub Max supports hand‑raise gesture control, raise your hand toward the screen to pause or play media. In rare cases, a stray hand motion can trigger the gesture mode and prevent voice commands from being processed. Try lowering your hands and saying “Hey Google” clearly. If that works, you may have accidentally enabled gesture control. Go to Settings > Gestures in the Google Home app and toggle it off if it’s causing false triggers.
That’s usually all it takes. Most stalled Nest Hub Max units respond to the soft reboot or Wi‑Fi reconnect. The physical mic switch is the one people overlook the most, check it before you do anything else.
