Dell C2660dn User Manual page 347

Symptom
016-404 is displayed when trying to
use security functions that require
certificates.
A certificate cannot be set with
"Certificate Details".
Although a certificate was imported,
it is not displayed when selecting
with "Local Device".
Server validation is not operating
correctly.
Digital Signature cannot be selected The certificate cannot be associated. Either the certificate has not been imported or the
with the IPsec setting.
Cause
The certificate data stored in
internal memory is either deleted,
corrupt, or is not readable.
The validity period is invalid.
The certificate path is invalid.
The type of the certificate is
incorrect.
The certificate chain is incorrect
when importing.
Action
Import the certificate and enable the security
settings again.
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 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.
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.
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.
certificate has not been associated for use with
Digital Signature of IPsec. Refer to "Setting the
Certificate in the IPsec Digital Signature Mode" to
set a certificate of IPsec.
Troubleshooting Guide
345