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Knowledge document #438

Mesh Repeater cannot establish a Wi-Fi connection

After you set up a Mesh Repeater, it cannot establish a Wi-Fi connection to the FRITZ!Box. If you are using a FRITZ!Repeater as a Mesh Repeater, depending on the model, the signal strength LEDs flash for a while and then switch off, or the Connect LED flashes quickly for a while and then flashes slowly.

Work through the following steps to resolve the problem.

Note:All instructions on configuration and settings given in this guide refer to the FRITZ!Box 6820 LTE v2, v3 and v4 with the latest FRITZ!OS; the FRITZ!Box 6820 LTE v1 may differ.

1 Installing the latest FRITZ!OS for the FRITZ!Box

  1. Install the latest FRITZ!OS on the FRITZ!Box.

2 Optimizing the FRITZ!Box's Wi-Fi settings

Adjusting the name of the Wi-Fi network (SSID)

  1. Click on 'Wi-Fi' in the FRITZ!Box user interface.
  2. Click on 'Wi-Fi Network' in the 'Wi-Fi' menu.
  3. Click on 'More Information on the Wi-Fi Network' and disable the option 'Hide name of the Wi-Fi network'. This way, all wireless devices can connect to the FRITZ!Box and the FRITZ!Box can optimally control your wireless devices in the Mesh ('Mesh Wi-Fi Steering').
  4. If you changed the name of the FRITZ!Box's Wi-Fi network (SSID), remove all special characters from the Wi-Fi network name. Since some wireless devices do not support all of the special characters allowed by the FRITZ!Box, only use letters (but not special characters such as ä, ë, ö, ü, á, é, í), numbers, and spaces.
  5. Click on 'Apply' to save the settings.

Disabling the MAC address filter

  1. Click on 'Wi-Fi' in the FRITZ!Box user interface.
  2. Click on 'Security' in the 'Wi-Fi' menu.
  3. Click on 'Restrict Access to Wi-Fi'.
  4. Enable the option 'Allow all new wireless devices'.
  5. Click on 'Apply' to save the settings.

Enabling the WPS function

  1. Click on 'Wi-Fi' in the FRITZ!Box user interface.
  2. Click on 'Security' in the 'Wi-Fi' menu.
  3. Click on the 'WPS Quick Connection' tab.
  4. Enable the option 'Push-button method enabled'.
  5. Click on 'Apply' to save the settings.

Unlocking the buttons

  1. Click on 'System' in the FRITZ!Box user interface.
  2. Click on 'Buttons and LEDs' in the 'System' menu.
  3. Click on the 'Keylock' tab.
  4. Disable the 'Buttons locked' checkbox.
  5. Click on 'Apply' to save the settings.

3 Reconfiguring the Wi-Fi connection

  1. Reconfigure the connection between the Mesh Repeater and the FRITZ!Box. Use the appropriate guide for your Mesh Repeater:
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