Hi Amos, Yes i also have reported to firefox support. But firefox support still didn't answer. Regards Jose Amos Jeffries wrote: > Jose Lopes wrote: >> Hi Markus, >> >> I have already defined Windows Server as WINS and DNS for windows >> client. >> I check again the messages between IE8 and Windows Server and I verify >> there are AS-REQ, AS-REP, TGS-REQ and TGS-REP packages (for non domain >> member). >> >> To me, seems like the API SSPI, that firefox use, first try NTLM and >> second try kerberos. But firefox deny the second try. >> And i don't know how to sort out this problem. >> >> Regards >> Jose > > Have the Firefox people been notified with the information you have > gathered so far? > > Amos