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Knowledge document #189

FRITZ!Box reports "FRITZ!Box does not have an internal clock"

Various FRITZ!Box functions cannot be set up. The message "FRITZ!Box does not have an internal clock" is displayed on the respective page and the date 01.01.1970 may be displayed in the event log.

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 FRITZ!Box 6820 LTE v2, v3, and v4 with the latest FRITZ!OS, the FRITZ!Box 6820 LTE v1 may differ.

1 Restarting the FRITZ!Box

  1. Click "System" in the FRITZ!Box user interface.
  2. Click "Backup" in the "System" menu.
  3. Click on the "Restart" tab.
  4. Click the "Restart" button.

2 Setting up the time server

  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 "Additional Settings" in the section "LAN Settings" to display all of the settings.
  5. In the "Time Synchronization" section, enter the NTP time server on the internet that the FRITZ!Box should synchronize its time with.

    Note:Normally it is not necessary to change the preconfigured NTP time server 2.europe.pool.ntp.org. Alternative NTP time servers can be found here.

  6. Enable the option "Make FRITZ!Box available as a time server in the home network".
  7. Click "Apply" to save the settings.
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