NTLM authentification failed

• Type: Task
• Status: Open
• Priority: Trivial
• Resolution: Unresolved
• Affects Version/s: 6.2.5 CE GA6
• Fix Version/s: None
• Component/s: Application Security > NTLM
• Labels:
  • backlog
  • ntlm
  • out-of-scope

Hi, 

I use Liferay 6.2 on Debian Server and i use Windows 2008 R2 for my Active directory server.

I have problem, i want to use NTLM on my Liferay portal but i have some problems. My first problem was « Session key negotiation failed » that i think i resolve with https://issues.liferay.com/browse/LPS-15380?_ga=2.29586359.901964052.1528704599-2043614718.1528466370
but now i have an other problem in the log file : « unable to perform NTLM authentification  à unable to authenticate due to communication failure with server liferay »
I use documentation to complete the argument in the portal but i don't have results. How know what is not good ? I test with different connect chain but nothing. 
Help me please

Simon