FRITZ!Box 6490 Cable Service - Knowledge Base

FRITZ!Box 6490 Cable Service

Cannot access the Internet when the FRITZ!Box is used with a cable connection

Although the FRITZ!Box is connected to the cable connection and configured for Internet access via cable, computers, smartphones, or other devices connected to it cannot access the Internet.

Important:Some of the settings described here are only displayed if the advanced view is enabled in the user interface.

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. Select "Internet connection" from the drop-down list.
  4. Check whether error messages are displayed.
    • If the message "Internet connection failed: Reason for error: 2 (DHCPv4 no answer on DISCOVER)" is displayed:
      • Contact your cable provider for a solution.
    • If the message "Cable Internet not responding (no synchronization)" is displayed often (several times a day):

2 Enabling the FRITZ!Box's DHCP server

The FRITZ!Box is configured as a DHCP server in the factory settings. If you disabled the FRITZ!Box's DHCP server, configure the following settings:

  1. Click "Home Network" in the FRITZ!Box user interface.
  2. Click "Home Network Overview" in the "Home Network" menu.
  3. Click on the "Network Settings" tab.
  4. Click the "IPv4 Addresses" button.
  5. Enable the DHCP server and define the range from which the FRITZ!Box assigns IP addresses.

    Note:The FRITZ!Box has the IP address 192.168.178.1 (subnet mask 255.255.255.0) and assigns IP addresses from xxx.20 to xxx.200 in the factory settings.

  6. Click "OK" to save the settings.

3 Configuring a network device as a DHCP client

4 Configuring the Internet Explorer

Perform the following step only if you are using Microsoft Internet Explorer and it displays the message "Web page unavailable while offline":

  1. Start the Internet Explorer.
  2. Open the "Tools" menu.
  3. If the menu "Work Offline" entry is displayed and there is a checkmark in front of it, click this entry to remove the checkmark.
  4. Click the "Internet Options" menu entry and then "Connections".
  5. Enable the option "Never dial a connection".
  6. Click "OK" to save the settings.

5 Contacting your provider

  • Contact your Internet service provider for a solution.