Epson WF-M21000 Series User Manual page 541

Administrator Information
❏ Connection test
For checking the connection between the printer to the mail server, perform the connection test from the
printer. Also, check the connection from the client computer to the server to check the communication status.
❏ Initializing the settings
If the settings and communication status show no problem, the problems may be solved by disabling or
initializing the network settings of the printer, and then setting up again.
Cannot Access Web Config
The IP address is not assigned to the printer.
A valid IP address may not be assigned to the printer. Configure the IP address using the printer's
control panel. You can confirm the current setting information with a network status sheet or from
the printer's control panel.
Web browser does not support the Encryption Strength for SSL/TLS.
SSL/TLS has the Encryption Strength. You can open Web Config by using a web browser that
supports bulk encryptions as indicated below. Check you are using the a supported browser.
❏ 80bit: AES256/AES128/3DES
❏ 112bit: AES256/AES128/3DES
❏ 128bit: AES256/AES128
❏ 192bit: AES256
❏ 256bit: AES256
CA-signed Certificate is expired.
If there is a problem with the expiration date of the certificate, "The certificate has expired" is
displayed when connecting to Web Config with SSL/TLS communication (https). If the message
appears before its expiration date, make sure that the printer's date is configured correctly.
The common name of the certificate and the printer do not match.
If the common name of the certificate and the printer do not match, the message "The name of the
security certificate does not match···" is displayed when accessing Web Config using SSL/TLS
communication (https). This happens because the following IP addresses do not match.
❏ The printer's IP address entered to common name for creating a Self-signed Certificate or CSR
❏ IP address entered to web browser when running Web Config
For Self-signed Certificate, update the certificate.
For CA-signed Certificate, take the certificate again for the printer.
The proxy server setting of local address is not set to web browser.
When the printer is set to use a proxy server, configure the web browser not to connect to the local
address via the proxy server.
❏ Windows:
Select Control Panel > Network and Internet > Internet Options > Connections > LAN settings
> Proxy server, and then configure not to use the proxy server for LAN (local addresses).
>
Settings to Use the Printer
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Problems when Making Settings