We are using alfresco enterprise 4.2.4 on Windows 2008 R2 and using NTLM SSO. the end user are accessing share by IE 11, randomly the authentication fails.
In the middle of a session randomly the Windows security pop up is display prompting for credentials
What I have been able to reproduce the error and what see is that t on pages that are slow to display
IE request to repeat authentication. When the Windows pop –up prompt for credential is
Because IE received the challenge from alfresco but did not encrypt it with the hash of the user password and included it in the an Authorization: NTLM header of the following http request,, this way the authentication fails since Alfresco cannot get the challenged encrypted by IE to send it to the domain controller jointly with the challenge, UserName, ComputerName, and Domain.
See below error in Tomcat log.
I wonder if anyone else has experienced this issue.
In the tomcat log the following error is logged which in my opinion is misleading, as in IE the cookies are enabled..
app.servlet.NTLMAuthenticationFilter] [http-apr-8888-exec-33] restartLoginChallenge...
2017-04-22 00:18:30,137 WARN [app.servlet.NTLMAuthenticationFilter] [http-apr-8888-exec-30] Authentication failed: NTLM details cannot be retrieved from session. Client must support cookies.
2017-04-22 00:18:30,137 DEBUG [app.servlet.NTLMAuthenticationFilter] [http-apr-8888-exec-30] restartLoginChallenge...