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Changing the name of the FRITZ!Box's working groupThe FRITZ!Box makes connected USB storage devices available for sharing in the home network under the Workgroup name "Workgroup". If you gave the working group in your home network another name, you can change the name of the FRITZ!Box working group.Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS...

FRITZ!Box reports "An unsupported USB device has been connected"Certain USB devices such as TV tuners, webcams, or audio devices cannot be used with the FRITZ!Box. When the USB device is connected to the FRITZ!Box, the message "An unsupported USB device has been connected. USB device [...] isochronic, plugged in" is displayed in the event log of the FRITZ!Box.The FRITZ!Box does not support the USB...

Cannot establish connections using the Teredo protocolYou cannot use the FRITZ!Box's internet connection to establish connections using the Teredo protocol. As a result, you cannot use Windows Remote Assistance via Easy Connect or establish DirectAccess connections, for example. Cause For security reasons, the FRITZ!Box blocks UDP port 3544 when an IPv6 internet connection is active. This means...

Cannot play media filesTelevisions, game consoles, Blu-ray players, or other UPnP-compatible playback devices or software cannot play individual photos, videos, or music pieces from the FRITZ!Box media server. When you try to play them, the device may display the error message "not supported file format" or "unknown file format".1 Changing the file extension of MKV video files for use with Samsung...

Status information for a printer connected to the FRITZ!Box is not availableComputers in the home network cannot retrieve status information like ink or paper level for a printer when the printer is connected to the FRITZ!Box via USB cable and configured as a network printer.Status information is not available for USB network printersTwo-way communication (bidirectional connection) between the...

Online storage contains a folder "lost+found" with files that cannot be deletedThere is a folder named "lost+found" on the online storage configured in the FRITZ!Box with contents that cannot be deleted. When you try to delete this folder, the following or a similar error message is displayed: "You require permission from [...] to make changes to this file."Folder "lost+found" is a part of the...

FRITZ!Box USB remote connection reports "Debug Assertion Failed"When installing the FRITZ!Box remote connection software, the error message "Microsoft Visual C++ Debug Library: Debug Assertion Failed!" is displayed. Installation cannot be completed.Changing the computer name in the operating systemAccording to Microsoft's definition, computer names may only contain standard letters (A-Z, a-z),...