Epson WorkForce WF-7720 Administrator Guide - Page 36

Pre-Shared Key was Forgotten Communication was Working, but Stopped Cannot Create the Secure IPP Printing Port Parent topic: Solving Problems Pre-Shared Key was Forgotten If you forget a pre-shared key, change the key using Web Config for the default or group policy. Parent topic: Solving Network Security Problems Communication was Working, but Stopped If network communication was working, but suddenly stopped, the product's and/or computer's IP address may have changed or is invalid. Try these solutions: • If DHCP is out of date, or the IPv6 address is out of date or was not obtained, you may not be able to find the IP address registered in Web Config. • If that does not solve the problem, enter a static IP address using Web Config. Parent topic: Solving Network Security Problems Cannot Create the Secure IPP Printing Port If you cannot create the secure IPP printing port, try these solutions: • Make sure you specified the correct server certificate for SSL/TLS communication using Web Config. • If you are using a CA certificate, make sure it is imported to the computer that is accessing the product. Parent topic: Solving Network Security Problems Solving Digital Certificate Problems Check these sections if you have problems using a digital certificate. Digital Certificate Warning Messages Cannot Import a Digital Certificate Cannot Update a Certificate or Create a CSR Deleted a CA-signed Certificate Parent topic: Solving Problems 36