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Loop back adapter and security

Source: microsoft.public.virtualpc
Sent: 05/04/2007
From: Idan
Message:

Hello,

I have VPC 2007 install on Windows XP SP2 machine.
I have VPC mahine windows 2003.
VPC use Microsoft Loop Back adapter (this is for demos)

I try to connect to the IIS web site on the VPC that requried authentication.
I'm getting the page can't be dispaled error. (no problem to access web page
not required authentication)

40960
The Security System detected an attempted downgrade attack for server
HTTP/192.168.27.2. The failure code from authentication protocol Kerberos
was "There are currently no logon servers available to service the logon
request.
(0xc000005e)".

40961
The Security System could not establish a secured connection with the server
cifs/otdemo. No authentication protocol was available.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.

The Security System detected an attempted downgrade attack for server
cifs/192.168.27.2. The failure code from authentication protocol Kerberos
was "There are currently no logon servers available to service the logon
request.
(0xc000005e)".

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
in the Windows XP machine under event log I can see logs:

192.168.27.2 is the Windows 2003 server ip address.

Any idea how to solve the problem ?

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