Condition Cause Solution
Cannot print using the printer
driver or connect using the
TWAIN driver.
User authentication has been
rejected.
Confirm the user name and login
name with the administrator of
the network in use if using
Windows Authentication, LDAP
Authentication, or Integration
Server Authentication.
Confirm with the user
administrator if using basic
authentication.
Cannot print using the printer
driver or connect using the
TWAIN driver.
The encryption key specified in
the driver does not match the
machine's driver encryption key.
Specify the driver encryption key
registered in the machine.
See “Encrypting Transmitted
Passwords”.
Cannot authenticate using the
TWAIN driver.
Another user is logging on to the
machine.
Wait for the user to log off.
Cannot authenticate using the
TWAIN driver.
Authentication is taking time
because of operating conditions.
Make sure the LDAP server
setting is correct.
Make sure the network settings
are correct.
Cannot authenticate using the
TWAIN driver.
Authentication is not possible
while the machine is editing the
Address Book data.
Wait until editing of the Address
Book data is complete.
After starting “User Management
Tool” or “Address Management
Tool” in SmartDeviceMonitor for
Admin and entering the correct
login user name and password,
a message that an incorrect
password has been entered
appears.
“Restrict Use of Simple
Encryption” is not set correctly.
Alternatively, “SSL/TLS” has
been enabled although the
required certificate is not installed
in the computer.
Set “Restrict Use of Simple
Encryption” to [On].
Alternatively, enable “SSL/TLS”,
install the server certificate in the
machine, and then install the
certificate in the computer.
See “Setting the SSL / TLS
Encryption Mode”.
7. Troubleshooting
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