Squid authenticatentlmhandlereply error validating user via ntlm

Afterwards the connection is closed by the browser.Ensure permissions on /var/db/samba/winbindd_privileged are set correctly.] [2008/04/11 , 0] utils/ntlm_auth.c:manage_squid_ntlmssp_request(776) NTLMSSP BH: NT_STATUS_ACCESS_DENIED 2008/04/11 | authenticate NTLMHandle Reply: Error validating user via NTLM.Here's a strace of the apache process which should be useful, it seems to work fine on the first challenge but then fail on the second strace: Process 6911 attached accept4(4, , [28], SOCK_CLOEXEC) = 26 gettimeofday(00 1b000] cache.log: 2016/05/10 | WARNING: ntlmauthenticator #1 exited 2016/05/10 | Too few ntlmauthenticator processes are running (need 1/10) 2016/05/10 | Starting new helpers 2016/05/10 | helper Open Servers: Starting 1/10 'ntlm_auth' processes 2016/05/10 | ERROR: NTLM Authentication Helper '0x7f8368efb268' crashed! 2016/05/10 | ERROR: NTLM Authentication validating user.Error returned ' BH Internal error' Yep - added your testing PPA, then: sudo apt-get update sudo apt-get upgrade samba (which brought in all dependencies) Then rebooted the server for good measure :) The above error messages were from after the reboot, and I'm still getting issues when trying to authenticate via the squid proxy.0ubuntu1) yakkety; urgency=medium * SECURITY REGRESSION: Updated to 4.3.9 to fix multiple regressions in the previous security updates.Error returned 'BH gss_acquire_cred() failed: Unspecified GSS failure. Shared components used by Firefox and other Mozilla software, including handling of Web content; Gecko, HTML, CSS, layout, DOM, scripts, images, networking, etc.Error returned ' BH Internal error' 2016/05/09 | WARNING: ntlmauthenticator #1 exited Errors in syslog: May 9 optsquidproxy kernel: [228590.127125] ntlm_auth[8850]: segfault at 8 ip 00007f201ec729b0 sp 00007ffda249aae8 error 4 in libsamba-running an Apache2 server with NTLM authentication against an AD, stopped working with 500 Internal Server error since the Samba upgrade.

Squid auth the Active Directory users(Win2003) by winbind, settings like follow: ... May 5 ocelot kernel: [ 187.793014] ntlm_auth[4543]: segfault at 8 ip 00007f10aad619b0 sp 00007ffc1ed0e778 error 4 in libsamba-When I run the commands on the command line they don't exit and pressing return gives: ERR Pressing "?

2.) Then Firefox opens a connection again and performs a NTLM authentication (Phase 1 message from browser, phase 2 message from proxy, phase 3 message from browser) successfully.

As response to the phase 3 request the requested resource is returned (which is the PDF document).

I am running a squid proxy server (Cent OS 5) that I am trying to get working with kerberos through our AD server (Windows Server 2008).

I have followed the instructions here: Examples/Authenticate/Kerberos To setup a keytab for the server, which has all worked perfectly.

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