FRITZ!Box 7581 Service - Knowledge Base

FRITZ!Box 7581 Service

Cannot configure port sharing rules

No further port sharing rules can be configured for a device in the FRITZ!Box. When you click "OK", the port sharing rules are not saved and added to the list of port sharings under "Internet > Permit Access > Port Sharing". The FRITZ!Box does not display an error message.


  • Error in FRITZ!OS 6.8x

1 Installing the latest FRITZ!OS

This error does not occur with the latest FRITZ!OS:

  1. Install the latest FRITZ!OS on the FRITZ!Box.