FRITZ!Box 5490 Service - Knowledge Base

FRITZ!Box 5490 Service

Cannot access the internet via the FRITZ!Box

Although the FRITZ!Box is connected to a fiber optic connection (Fiber to the Home, FTTH) and configured to access the internet over fiber optics, computers, smartphones, or other devices connected to it cannot access the internet.

One of the following messages may be displayed in the "Network and Sharing Center" of the respective Windows computer:

  • "Unidentified Network"
  • "Access: Local only"
  • "Access type: No internet access"

Simply proceed as described below. After each measure, check whether the problem is solved.

Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.

1 Enabling the FRITZ!Box's DHCP server

In the factory settings, the FRITZ!Box automatically assigns the correct IP settings to all devices via DHCP. If you disabled the FRITZ!Box's DHCP server, re-enable it:

  1. Click "Home Network" in the FRITZ!Box user interface.
  2. Click "Network" in the "Home Network" menu.
  3. Click on the "Network Settings" tab.
  4. Click the "IPv4 Addresses" button. If the button is not displayed, enable the Advanced View.
  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.

2 Configuring the device to automatically obtain IP settings

To ensure that the device always uses the correct IP settings, make sure that it automatically obtains its IP settings from the FRITZ!Box (this is the default setting for most devices):

3 Configuring a DNS server in the FRITZ!Box

In the factory settings, the FRITZ!Box uses the internet service provider's DNS server for the name resolution of web addresses. If you set up other DNS servers in the FRITZ!Box, re-enable the internet service provider's DNS server:

  1. Click "Internet" in the FRITZ!Box user interface.
  2. Click "Account Information" in the "Internet" menu.
  3. Click on the "DNS Server" tab. If the tab is not displayed, enable the Advanced View.
  4. Enable the option "Use DNSv4 servers assigned by the internet service provider (recommended)".
  5. If the section "DNSv6 Servers" is displayed, enable the option "Use DNSv6 servers assigned by the internet service provider (recommended)".
  6. Click "Apply" to save the settings.

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 Configuring the computer's firewall

A firewall can interfere with the communication between the computer and the FRITZ!Box:

  1. Configure the firewall on the computer so that it allows connections from the computer to the FRITZ!Box. Information on how to set it up can be obtained from the manufacturer of the firewall, for example refer to the manual.

6 Installing the latest software for network adapters

  1. Install the latest driver for the computer's network adapter or the latest software for the respective device.

    Note:Often the Windows Update does not offer all of the latest device drivers. Therefore, use the drivers from the manufacturer's website (for example Intel, Broadcom, Realtek).