[jcifs] Random "Internet Explorer Cannot display the Web page" onWindows 2008 server, IE 7 and Tomcat 6

Michael B Allen ioplex at gmail.com
Mon Nov 2 10:00:42 MST 2009

Your response is totally false.

All versions of Windows fully support both NTLMv1 and NTLMv2. Windows
2008 and Windows 7 just use NTLMv2 by default.

JCIFS fully supports both NTLMv1 and NTLMv2 as a client. As a server
it does not support NTLM or any other authentication protocol at all
(although there is hack that allows it to validate NTLMv1 hashes as a
server that is in the process of being removed from the JCIFS


On Mon, Nov 2, 2009 at 10:20 AM, Travaglini, Joseph
<Joseph.Travaglini at fmr.com> wrote:
> Windows 2008 Server does not have an NTLMv1 implementation, whereas
> JCIFS does not have support for NTLMv2.
> That is, you cannot use JCIFS with Windows 2008/Windows 7.
> -----Original Message-----
> From: jcifs-bounces at lists.samba.org
> [mailto:jcifs-bounces at lists.samba.org] On Behalf Of pardesh
> Sent: Monday, November 02, 2009 10:18 AM
> To: jcifs at lists.samba.org
> Subject: [jcifs] Random "Internet Explorer Cannot display the Web page"
> onWindows 2008 server, IE 7 and Tomcat 6
> Hi,
> We are using JCIFS library (jcifs 1.2.19) for ntlm authentication. I can
> see "Internet Explorer Cannot display the Web page" error page randomly
> on
> Tomcat 6, IE 7, Windows 2008 server. There is no heavy traffic/requests
> as i
> was the only one accesing this server for testing.
> I can see the request is authenticated and redirected to the requested
> URL,
> where it is showing the error page. reload the page works.
> As this is random and occuring once for every 5 new authentcation
> requests.
> Our Earlier relaease is for windows xp, tomcat 5.5 and the same code for
> authentication used to work fine.
> Does anyone has any idea why it is behaving this way? Your
> thoughts/inputs are
> highly appreciated as it is my biggest issue now for moving to
> prodcution.
> Thanks,
> Pardesh

Michael B Allen
Java Active Directory Integration

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