FRITZ!Box 7360 Service - Knowledge Base

FRITZ!Box 7360 Service

Wireless connection drops frequently

The wireless connection (WiFi) between one or more wireless devices (for example a notebook, smartphone, tablet) and the FRITZ!Box drops frequently. In some cases the wireless connection cannot be re-established until you disable and re-enable the wireless network or restart the FRITZ!Box.

One of the following error messages may be displayed in the event log of the FRITZ!Box:

  • "Wireless LAN registration failed: Authorization failed."
  • "Deregistering wireless LAN device: Device not responding. MAC address: [...] (#0302)."

Cause

  • The quality of the wireless connection is influenced by surrounding structural conditions (for example thickness and reinforcement of the walls), the wireless device being used, and also by other electronic devices in the vicinity such as microwaves, baby monitors, wireless speakers, and Bluetooth devices.

Note:The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS for your FRITZ!Box.

Simply proceed as described below. After each measure, check whether the issue persists.

1 Checking the event log of the FRITZ!Box

  1. Click "System" in the FRITZ!Box user interface.
  2. Click "Event Log" in the "System" menu.
  3. Check whether there are events listed that occurred before and while the error occurred, or whether there are only events that occurred after the error occurred.
    • If events that occurred before and while the error occurred are also displayed:
      • Proceed with the following section.
    • If only events that occurred after the error are displayed:

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

3 Installing the latest software for the wireless device

The following step is only necessary if the wireless connection of only one wireless device drops frequently, whereas other wireless devices can establish a stable wireless connection to the FRITZ!Box when used at the same location:

  • Install the latest driver for your computer's wireless network adapter or the latest operating system (for example Android, iOS) for the wireless device.

    Note:You can find information on updating the wireless network adapter or wireless device in its manual, or consult the manufacturer directly.
    You can find the latest drivers for the FRITZ!WLAN Sticks in our download area.

If your device's wireless connection still continues to drop, there are unfortunately no further settings in your FRITZ!Box that influence the quality of the wireless connection. In such cases, the problem lies with the wireless device. The manufacturer of the wireless device may be able to provide you with information on how to resolve the issue.

4 Setting the maximum transmitter power

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. Check which wireless channel setting is enabled.
    • If the option "Set radio channel settings automatically (recommended)" is enabled:
      • Proceed with the following section.
    • If the option "Adjust radio channel settings" is enabled:
      1. Click "Additional settings".
      2. Select "100%" from the drop-down list "Maximum transmitter power".
      3. Click "Apply" to save your settings.

5 Finding the ideal location for wireless devices

  • If possible, position the FRITZ!Box in a room that is centrally located.
  • Do not position the FRITZ!Box directly in the corner of a room.
  • Position the FRITZ!Box so that it is as unobstructed as possible, i.e. not directly in back of or under an obstacle such as pieces of furniture or a heater.
  • Position the FRITZ!Box as high in the room as possible, for example on a shelf.
  • Position the FRITZ!Box so that there are as few obstacles as possible between it and the other wireless devices. In particular, metallic objects or objects containing water (for example a refrigerator, houseplants) significantly reduce the quality of the wireless signal.
  • Position the FRITZ!Box so that it is away from other transmitters (for example microwaves, baby monitors, wireless speakers, Bluetooth devices).
  • For testing purposes, position the FRITZ!Box and the wireless device as close as possible.

    Note:Once you have ruled out all other sources of error, you can increase the distance between the two devices again.

6 Identifying sources of interference

  1. Turn off all devices that could interfere with the wireless network, one after the other.

    Note:All devices that emit radio waves are possible sources of interference. These include other wireless devices, wireless speakers, Bluetooth devices, baby monitors or microwaves, for example.

  2. After you have turned off a device, check whether the wireless connection is still impaired.

Once you have identified a device that causes interference, you can either leave it turned off or try to avoid the interference by setting the channel manually.

7 Selecting the best wireless channel

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. Use the graph "Use of the Wireless LAN Channels" to determine which channel in the lower frequency range is least affected by other wireless networks and sources of interference.
  4. Enable the option "Adjust radio channel settings" in the "Radio Channel Settings" section.
  5. Select the wireless channel that was affected the least from the drop-down list "Radio channel".
  6. Click "Apply" to save your settings.
  7. Check whether the issue with your wireless connection still occurs.
    • If the issue with the wireless connection still occurs:
      • Repeat steps 3 - 7 with a wireless channel in the middle and then with one in the higher frequency range. Once you have finished testing, use the wireless channel that was least affected by disturbances.

        Important:The diagram of the wireless environment only reflects the current situation! The allocation of the frequency bands can change significantly over the course of the day because many wireless networks are turned on when in use. Therefore, check several times to see which wireless channels are least affected by interference.

8 Changing the name of the wireless network (SSID)

If there are other wireless networks with the same name in the vicinity, wireless devices may automatically attempt to connect to the wrong wireless network. To avoid this, give your FRITZ!Box a unique name:

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Network" in the "Wireless" ("WLAN") menu.
  3. Enter a name of your choice that does not contain special characters in the field "Name of the wireless radio network (SSID)".

    Important:Not all wireless devices support all special characters. Therefore, only use standard Latin letters (not letters such as ä, ë, ö, ü, á, é, í) and numbers in the wireless network name.

  4. Click "Apply" to save your settings.

When you apply the new wireless network name, all wireless connections to the FRITZ!Box are cleared. You must then reconfigure wireless connections to the FRITZ!Box.

Now the FRITZ!Box and the wireless device are ideally configured. The wireless connections between your wireless devices and the FRITZ!Box are as stable as possible.

Note:If the previous measures did not succeed in sufficiently increasing the quality of your wireless connection, you can use a FRITZ!WLAN Repeater to extend the range and increase the stability of your wireless network.