User's Manual

Troubleshooting | 381
Wireless Problems
NOTE:
• Wireless network is available on Dell H625cdw and Dell H825cdw.
The certificate cannot be imported. The time setting may be incorrect. Check validity period of the
certificate as well as the time setting of the device.
The certificate file may be incorrect. Make sure that the password is
correct.
Make sure that the file type is PKCS#7/#12 or x509CACert.
Make sure that the attribute information such as key Usage or
Extended key usage of the certificate to be imported is set correctly.
The browser may be incorrect. Use Internet Explorer.
016-404 is displayed when trying to
use security settings that require
certificates.
The certificate data stored in internal memory may be either
deleted, corrupt, or may not be readable. Import the certificate and
enable the security settings again.
A certificate cannot be set with
"Certificate Details."
The validity period of the certificate may be expired. Make sure that
the time setting of the printer 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. Make
sure that 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 when selecting
with "Local Device."
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.
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.
Digital Signature cannot be selected
with the IPsec setting.
Either the certificate has not been imported or the 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.
Problem Action
Cannot setup wireless connection. Ensure that the Ethernet cable is disconnected from the printer.
Ensure that Wi-Fi is set to On. See "Wi-Fi | WPS."
The firewall on your computer may be blocking communication
with your printer. Disable the firewall on your computer.
Ensure that your local wireless network is supported on 802.11b/g/n
at 2.4 GH.
Cannot setup wireless connection
with WPS (Wi-Fi Protected Setup).
Ensure that the security setting of the wireless LAN access point or
router is WPA or WPA2. (WEP is not supported on WPS.)
Cannot setup wireless connection
with the WPS-PBC (Wi-Fi Protected
Setup-Push Button Configuration).
Press the WPS button on the wireless LAN access point or router
within 2 minutes after starting the WPS operation on the printer. For
details about the wireless LAN access point or router, refer to the
manual supplied with the wireless LAN access point or router.
Problem Action