Epson WF-C5890 Series

Web browser does not support the Encryption Strength for SSL/TLS.
Solutions
SSL/TLS has the Encryption Strength. You can open Web Cong 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 Certicate is expired.
Solutions
If there is a problem with the expiration date of the certicate, "e certicate has expired" is displayed
when connecting to Web Cong with SSL/TLS communication (https). If the message appears before its
expiration date, make sure that the printer's date is
congured
correctly.
The common name of the certicate and the printer do not match.
Solutions
If the common name of the certicate and the printer do not match, the message "e name of the
security certicate does not match···" is displayed when accessing Web Cong using SSL/TLS
communication (https). is happens because the following IP addresses do not match.
❏ e printer's IP address entered to common name for creating a Self-signed Certicate or CSR
❏ IP address entered to web browser when running Web
Cong
For Self-signed Certicate, update the certicate.
For CA-signed Certicate, take the certicate again for the printer.
The proxy server setting of local address is not set to web browser.
Solutions
When the printer is set to use a proxy server,
congure
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 congure not to use the proxy server for LAN (local addresses).
❏ Mac OS:
Select System Preferences > Network > Advanced > Proxies, and then register the local address for
Bypass proxy settings for these Hosts & Domains.
Example:
192.168.1.*: Local address 192.168.1.XXX, subnet mask 255.255.255.0
192.168.*.*: Local address 192.168.XXX.XXX, subnet mask 255.255.0.0
Preparing the Printer and Making Initial Settings > Problems when Making Settings > Hints to S …
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