Ricoh PRO C900 Operating Instructions Manual page 141

Error Code
W0406-104
Cause
4. Cannot resolve the domain
name.
Authentication Does Not Work Properly
Solution
Specify the IP address in the
domain name and confirm that
authentication is successful.
If authentication was
unsuccessful:
1. Make sure that Restrict LM/
NTLM is not set in either
"Domain Controller Security
Policy" or "Domain Security
Policy".
Authentication is rejected
because NTLMv2 is not
supported.
2. Make sure that the ports for
the domain control firewall and
the firewall on the machine to
the domain control connection
path are open.
If you are using a Windows
firewall, open "Network
Connection Properties". Then
click detail settings, Windows
firewall settings, permit
exceptions settings. Click the
exceptions tab and specify
numbers 137, 139 as the
exceptions.
In "Network Connection"
properties, open TCP/IP
properties. Then click detail
settings, WINS, and then check
the "Enable NetBIOS over
TCP/IP" box and set number
137 to "Open".
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139