FRITZ!Box 3370 Service - Knowledge Base

FRITZ!Box 3370 Service

Cannot access the Internet via another modem

The FRITZ!Box cannot connect to the Internet using an external DSL, fiber optic, or cable modem.

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 Restarting the modem

  • Restart the modem by unplugging it briefly.

    Note:It may take several minutes for the modem to restart. While it is restarting you will not be able to access the Internet.

2 Restarting the FRITZ!Box

  1. Unplug your FRITZ!Box by removing the power cable from the electrical outlet.
  2. Plug it in again after 5 seconds.

    Note:The FRITZ!Box settings remain intact. The restart will take about 2 minutes. During this time, you cannot access the FRITZ!Box.

3 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. Click on the "Internet Connection" tab.
  4. Check whether error messages are displayed.
    • If the message "Internet connection failed: Reason for error: 2 (DHCPv4 no answer on DISCOVER)" is displayed and you are using the FRITZ!Box with a cable modem:
      • Contact your cable provider for a solution.
    • If the message "PPPoE error: Timeout [...]" is displayed:

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 Checking the modem

The modem may be defective or malfunctioning. Therefore, check whether you can establish an Internet connection if you connect the modem directly to a computer:

  1. Use a network cable to connect the modem to a computer.
  2. On the computer, configure an Internet connection that uses the modem. Refer to the manufacturer of the operating system for information on the procedure.
  3. Check whether the computer can connect to the Internet.
    • If you cannot successfully connect to the Internet:
      • Contact the modem's manufacturer or the retailer you bought it from.
    • If you were able to successfully connect the Internet:
      • Proceed with the following section.

6 Reconfiguring the Internet connection in the FRITZ!Box

In order to rule out incorrect configuration of the FRITZ!Box as a cause, reconfigure Internet access: