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Bridge Offline

Nuki Smart Lock

Severity: Moderate

Source: OnlyErrorCodes.com — Every error code. One place.

Nuki Bridge Offline — How to Fix Connectivity

What it means

A Nuki Bridge offline status means the bridge has lost connection to your Wi-Fi or to the Nuki cloud.
Most cases are resolved by power-cycling the bridge and verifying Wi-Fi signal strength.

Affected Models

  • Nuki Bridge
  • Nuki Bridge 2.0
  • Nuki Smart Lock 3.0 Pro (built-in Wi-Fi)
  • Nuki Smart Lock 4.0 Pro (built-in Wi-Fi)

Common Causes

  • Bridge unplugged or power adapter loose
  • Wi-Fi signal too weak at the bridge location
  • Wi-Fi password changed and the bridge has stale credentials
  • Router rebooted and the bridge did not reconnect
  • Bridge firmware out of date

How to Fix It

  1. Check the bridge LED.

    Look at the LED on the bridge.
    A solid blue LED means connected.
    A red or off LED means disconnected.
    The exact pattern and meaning is in your manual.

  2. Power-cycle the bridge.

    Unplug the bridge from the wall socket for 30 seconds, then plug back in.
    Wait 2 minutes for it to fully reconnect.
    This resolves most transient offline issues.

  3. Verify Wi-Fi signal at the bridge.

    The bridge needs reasonable Wi-Fi signal at its socket location.
    If the bridge is far from your router, try moving it closer or adding a Wi-Fi extender between the router and the bridge.

  4. Re-add the bridge after a Wi-Fi password change.

    If you changed your Wi-Fi password, the bridge has stale credentials and cannot reconnect.
    Delete the bridge in the Nuki app and add it again, entering the new password during setup.

  5. Update bridge firmware.

    Open the Nuki app and check for bridge firmware updates.
    Older firmware can cause connectivity issues with modern routers.

When to Call a Professional

Most bridge offline issues are user-fixable.
If a freshly set up bridge cannot connect at all, Nuki support can verify the bridge identity and replace it if faulty.

Frequently Asked Questions

Do I need a Nuki Bridge with a Nuki Smart Lock 3.0 Pro or 4.0?

No. The Pro models have Wi-Fi built in and connect directly to your home network without a bridge. The standard 3.0 model still needs the bridge for remote control.

Why does my Nuki Bridge keep going offline every few days?

Usually weak Wi-Fi signal or a router that periodically resets the connection. Move the bridge closer to the router, or add a Wi-Fi extender. Also check that your router is not on a battery-saver schedule.