I have similar problems but i couldnt fix it with changing the lanman settings.
We have a server 2003 r2 and windows 8.1 clients. all 2 or 3 weeks the user lose his authentication credentials.
You can see the server and go to his shares, but u have to put in your network logon credentials.
if you quit the domain and reconnect after that, the shares works fine.
3 weeks later the same problem.
even if i deposit my logon credentials and enable the checkbox to save the logon credentials, the authentication fails after i restart my workstation
anybody have an idea?
I have configured these configurations without benefits:
the information in the log talk about: "There are currently no logon servers available to service the logon"
Network security: LAN Manager authentication level
Set to Send LM & NTLM responses only
Set the Minimum session security for NTLM SSP
Disable Require 128-bit encryption