If you see unfamiliar devices in the Eero app, the issue is usually a weak Wi-Fi password, a connected guest, or a device you no longer recognize.
This guide explains how to remove unknown devices from your Eero network and secure it so they do not come back.
Why unknown devices appear on an Eero network
Eero mesh networks are designed to make home Wi-Fi simple, but that also means every connected client appears in the app.
An unknown device may be a phone, laptop, smart TV, printer, game console, IoT device, or a neighbor using stolen credentials.
In many cases, the device is not malicious.
It may belong to a household member, a guest, or a device that changed its name after a software update.
Before removing it, confirm whether it is actually unauthorized.
How to identify the device in the Eero app
Start in the Eero app and review the list of connected devices.
Eero often shows a device name, manufacturer, connection type, and the last time it was active.
- Check device name and manufacturer: A generic name such as “Android,” “ESP32,” or “Unknown” may still belong to a legitimate device.
- Compare activity times: If the device is active when no one is home, that is a useful clue.
- Review connection type: Wired devices are usually easier to identify than wireless ones.
- Look at room assignments: If you have previously labeled devices in the app, compare those labels with the suspicious entry.
If you are using Eero Plus or advanced security tools, you may also see alerts related to suspicious activity, which can help separate routine devices from potential intruders.
How to remove unknown devices from your Eero network
The Eero app does not always offer a single “remove forever” button for every unknown client, because most devices simply reconnect if they still know the Wi-Fi password.
The practical fix is to block the device and change network access credentials.
- Open the Eero app and select the suspicious device.
- Choose the option to pause or block the device if available in your app version.
- Change the Wi-Fi password for your primary network.
- Update the password on trusted devices only.
- Reconnect approved devices one by one so you can confirm what is still in use.
Blocking a device helps immediately, but changing the Wi-Fi password is the most reliable way to prevent unauthorized devices from returning.
What to do if the device keeps coming back
If the same device reappears after you block it, the most likely explanation is that it still has valid credentials or is joining through another access point.
In a mesh system, a device may reconnect quickly if the password has not changed.
- Change the SSID and password: If you suspect the password has been shared widely, create a new network name and password.
- Check guest network settings: Some devices may be joining through the guest network rather than the main one.
- Review connected smart home gear: Cameras, plugs, hubs, and voice assistants often reconnect automatically after power cycles.
- Restart Eero nodes: A reboot can refresh the device list and help confirm whether the client is still active.
If the device is still present after a password reset, inspect the home for forgotten equipment, such as a printer, tablet, streaming stick, or a smart home bridge.
How to secure your Eero network after removing a device
Removing one unknown device is only part of the fix.
To reduce the chance of future intrusions, harden the network settings that control access.
Use a strong, unique Wi-Fi password
Choose a long password that is not reused on other services.
A strong passphrase is harder to guess and less likely to be leaked from another account.
Enable guest access for visitors
Use the Eero guest network for visitors, temporary devices, and smart home installers.
This keeps guests off your primary network and makes it easier to rotate access later.
Update the Eero app and firmware
Keep the Eero app current and allow firmware updates when available.
Security patches can close vulnerabilities that affect network visibility, authentication, and device handling.
Review device permissions and family access
If multiple people manage the network, make sure everyone understands who is allowed to connect new devices.
Shared households often create “mystery devices” through simple oversight.
How to tell whether a device is actually unauthorized
Before assuming a breach, verify likely sources of false alarms.
Many devices appear unfamiliar because their manufacturer name is abstract or because they use randomized MAC addresses.
- Personal phones: iPhones and Android phones may appear under a chipset or vendor name instead of a friendly label.
- IoT devices: Smart bulbs, thermostats, plugs, and cameras often show generic hardware identifiers.
- Privacy features: Modern phones can use private Wi-Fi addresses, which may make the same device appear as a new client after reconnecting.
- Router migration: If you recently changed internet service or replaced hardware, old entries may still show up briefly.
When in doubt, disconnect the suspected device from power or Wi-Fi for a few minutes and see whether it disappears from the Eero app.
Signs of a real security problem
Some symptoms suggest more than a harmless unknown client.
If you notice repeated reappearance of unrecognized devices, this may indicate compromised credentials.
- Unexpected logins: Devices connecting at odd hours without household activity.
- Frequent password failures: Signs that someone is testing or guessing credentials.
- Changed settings: New DNS, renamed networks, or altered guest access settings.
- Performance issues: Sudden bandwidth drops caused by unauthorized streaming, downloads, or uploads.
If you suspect compromise, change your Wi-Fi password immediately and review the password on your Eero account and associated email accounts as well.
Best practices for keeping Eero device lists clean
A well-maintained device list makes it easier to spot new threats and avoid confusion later.
Naming devices clearly is one of the simplest improvements you can make.
- Label phones, laptops, tablets, consoles, printers, and smart home devices as soon as they connect.
- Remove or rename old devices after upgrades or replacements.
- Use a separate guest network for short-term access.
- Audit the device list monthly, especially after visitors or new device purchases.
- Save the MAC address or vendor name of critical devices if you manage a large home network.
With clear naming and periodic review, the Eero app becomes much easier to trust at a glance.
When to contact Eero support or your ISP
If you cannot identify a device, cannot block it, or repeatedly see signs of intrusion, contact Eero support for help with the app, network configuration, or account-level issues.
Your internet service provider can also help if the modem, gateway, or upstream account may be involved.
For households with business-critical devices, cameras, or home office equipment, it may be worth documenting the device list before making changes so you can restore trusted connections quickly.