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Why was a new user created when FRITZ!OS was updated?

The new user was created because login to the FRITZ!Box user interface in the home network was changed to "Login with FRITZ!Box username and password" with the FRITZ!OS update. If only a password was used to access the user interface before the update, a user with the name "fritz" plus a random four-digit number, for example "fritz1234", is automatically created during the update. This user is given the password that was previously used for login.

The user that was automatically created is displayed under "System > FRITZ!Box Users > Users". As long as only the user that was automatically created exists, nothing changes when logging in to the FRITZ!Box user interface. This user will only be displayed in the FRITZ!Box login screen if additional users are created.