Apache 2.2.14 with mod_auth_sspi 1.0.4
FireFox (with ntlm auth configured) fails to authenticate:
[Thu Nov 05 10:25:43 2009] [error] [client 192.168.92.107] (OS 87)The parameter is incorrect. : authentication failure for "/": user unknown, reason: cannot generate context
This appears to be do to NTLMv1 being disabled on default on Windows Vista and above. Manually enabling NTLMv1 allows auth to proceed correctly.
One item of note is that IE8 to a NON-FQDN sucessfully authenticates without NTLMv1 enabled without other evidence I am assuming that it is uses kerberos or successfully triggering NTLMv2 in mod_auth_sspi?
Solution: "SSPIPackage Negotiate"
Caused sessions connected to a Non-FQDN site to fail with immediate access denied, no prompt for basic auth.