java.io.IOException: Failed to establish session

 Hello Adam, Mike, Everyone

Have you had any luck discovering the root cause for this issue?

I posted a few months ago on the mailing list. One of our customers suffe=
rs from exactly the same issue but we're currently not able to reproduce =
it on our side.
https://lists.samba.org/archive/jcifs/2014-October/010188.html
The same issue reported a long time ago by other users:=20
http://samba.2283325.n4.nabble.com/Failed-to-establish-session-td2512348.=
html#a2512349
http://samba.2283325.n4.nabble.com/IOException-at-ssn139-access-print-ser=
ver-td4643959.html

I just dug up this thread and I see that you suffered from the same thing=
 and you were able to debug it locally.=20
I know it was a long time ago but do you by any chance remember what was =
the OS of the server machine? Did you use NetBIOS with alternative names =
+ Windows Server 2003 for the server? If that's the case then it might be=
 related to:
http://support.microsoft.com/kb/940684

Also, do you remember any details about your environment in general? Any =
tips on how to reproduce that will be appreciated!

Best regards,
M.D.