Users Guide

432 | Digital Certificate Problems
Digital Certificate Problems
Symptom Cause Action
Import cannot be selected on
the Security Certificates
screen.
SSL communication is
disabled.
Create a self-signed certificate and enable
SSL.
The certificate cannot be
imported.
The time setting is incorrect. Confirm validity period of the certificate as
well as the time setting of the device.
The certificate file is incorrect. Confirm whether the password is correct.
Confirm whether the file type is
PKCS#7/#12 or x509CACert (extension:
p7b/p12/pfx/cer/crt).
Confirm whether the attribute information
(key Usage/Extended key usage) of the
certificate to be imported is set correctly.
The browser is incorrect. Use Internet Explorer
®
.
016-404 is displayed when
trying to use security
functions that require
certificates.
The certificate data stored in
internal memory is either
deleted, corrupt, or is not
readable.
Import the certificate and enable the
security settings again.
A certificate cannot be set in
Security Certificates.
The validity period is invalid. The validity period of the certificate is
invalid. Confirm whether the time setting of
the machine is correct, and whether the
validity period of the certificate has expired.
The certificate path is invalid. The certificate chain (path validation) of the
imported certificate may not be correctly
validated. Confirm whether all of the
high-level certificates
(Trusted/Intermediate) have been imported
and are not deleted, and whether the
validity period has expired.
Although a certificate was
imported, it is not displayed
on the Security Certificates
screen.
The type of the certificate is
incorrect.
To import a certificate for use with the
device (own device), import the secret key
and a certificate of the PKCS#12 (p12/pfx)
format as a pair.
Server validation is not
operating correctly.
The certificate chain is
incorrect when importing.
Although importing a root certificate
(Trusted) to use for server authentication, an
Intermediate certificate may be required
when validating the path.
When executing a certificate file with the
certification authority, create the certificate
with a format including all paths and then
import that certificate.