Attachmate - reflections for SSH Connection issue

We have a client using our new attachmate software (SSH SFTP, using a public and private key authentication) and all was working fine. Now the client is getting this error:

[039] RSSHD 7.2 .2.151): .\sshd.cpp:WindowsServerAuthenticator::GetLSALogonUserHandle(3048) Unable to obtain TCB privilege, and can't maintain a connection.

It is a windows based SSH SFTP Service running on a windows 2008 server.

Thank, any ideas?

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What server (SSH Software) you are using?
Which authentication method in use? Looks like kerberos from error....
gcastongAuthor Commented:
It's call Reflections for IT Server, by Attachmate. Authentication is using pub and private key. Not sure if that helps.
Can you get a log from openssh or putty client connecting?

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