How can I change the NTLM authentication type on my windows box ?

Update 10-31-2014 : webNetwork 6.2.1.182 and higher works much better with NTLM V2 and the change below should not be needed anymore.  It is still provided here just in case a customer should need to change that setting.

To work with webnetwork, the NTLM settings should be set to NTLM V1 but to use V2 if negotiated.

 

Resolution The web site : http://support.microsoft.com/kb/823659 explains the options. The section to look for is :

Network security: Lan Manager authentication level

sub section f has the registry in question.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\LmCompatibilityLevel is the registry setting. The default value for Server 2008 is 3. It needs to be set to 1.