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Troubleshooting
305
Digital Certificate Problems
Cannot scan using TWAIN or 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.
Problem Action
The
Certificate Signing Request (CSR)
/
Upload Signed Certificate
is not displayed.
Create a self-signed certificate and enable
SSL/TLS Server Communication
. For
details, see "Preparing to Use HTTPS Communication" on page 244.
The certificate cannot be imported. Confirm validity period of the certificate as well as the time setting of the printer.
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.
Use Internet Explorer.
Although a certificate was imported, it is not
displayed.
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.
Problem Action
305


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