Users Guide

Troubleshooting Guide 527
Digital Certificate Problems
Cannot scan using TWAIN or Windows
Image Acquisition (WIA) on a Windows
Server
®
2012 or Windows Server
®
2012 R2
computer.
Install the Desktop Experience feature on the computer.
To install Desktop Experience:
1 Click Server Manager from the Start screen.
The
Server Manager screen appears.
2 Under Manage , click Add Roles and Features .
Add Roles and Features Wizard appears.
3 Click Next to skip the Before you begin page.
4 Ensure that Role-based or feature-based installation is selected, and then click
Next .
5 Ensure that Select a server from the server pool is selected, select the server under
Server Pool , and then click Next .
6 Click Next to skip the Select server roles page.
7 Select the Desktop Experience check box under User Interfaces and
Infrastructure
, and then click Next .
8 Click Confirmation from the list on the left.
9 Select the Restart the destination server automatically if required check box, and
then click
Install .
10 Restart the computer.
Symptom Cause Action
The certificate import button is
disabled.
SSL/TLS communication is
disabled.
Create a self-signed certificate and enable SSL/TLS.
The certificate details button is
disabled.
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.
Problem Action