[Samba] Domain login - XP 64 -> Samba

Jeremy Allison jra at samba.org
Fri Jun 17 23:49:18 GMT 2005

On Fri, Jun 17, 2005 at 05:38:17PM -0400, Brian Ruth wrote:
> I currently have samba setup as a file/login server. A variety of 
> clients running Windows 2000 and XP 32-bit authenticate normally without 
> any issues. I just brought up a Windows XP 64-bit box made the standard 
> group policy changes and joined the domain without any issues. When 
> attempting to login against the domain Windows returns "A remote 
> procedure call (RPC) protocol error occurred".

I've been looking into this with the help of Björn JACKE <bj at SerNet.DE>.

So far I've discovered that an XP-64 box seems to do an schannel RPC
NETLOGON bind with packet integrety selected (5), but an XP-32 box
does the same call with packet privacy (6) selected. This may just
be a difference between the registry settings on the 64-bit client test
machine (I don't have one here) and my 32-bit vmware XP test machine.

It's the reply to the NetrLogonSamLogon request that the 64-bit
client doesn't seem to like - after that it shuts down the connection
and doesn't talk more. The 32-bit client seems happy with the same

I'm still investigating, but without a 64-bit client box to test with
it's slow going...


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