samba - Sep 2014 - Joining Domain,Accessing the Server RSAT

Hi All,

I just did samba 4.1 AD 15 day's back everything working is fine now. i
joined the one more machine (windows 7) to domain i'm getting the error
"The security ID Structure is invalid" and also i try to browse the
server
in administrator user the same error occured, when i try to open RSAT tool
"RPC server is unavailable" existing node

kindly help me to solve this issue


Regards
Muhtukkumar.A