Run SecPol. These two policies should be your focus:. Check all group memberships for your problem user s to make sure they are allowed access from the network and not explicitly denied via those two policies. There are different versions of NTLM, and additional security options within them. IIS logs may just show However, if you go look at the registry or group policy editor on the applicable machines as described below, it should be easy to spot a problem.
Make sure the value is compatible between the three. Note: This setting can be controlled by Group Policy GPO , so you should check that to make sure any registry changes you make do not get reverted the next time group policy is applied. If you run gpedit. Important: You may have to reboot before changes take effect. This is most likely to occur for users that are in a remote domain or trusted forest. This one is a little harder to nail down. It can take a network trace with Netmon or Wireshark to fully diagnose.
However, a good indication of the problem may lie in your IIS logs. You may see that the final request that includes the whole NTLM token receives a You should also verify your domain and forest trusts. This is a bit of a complicated topic, but you can sum it up like this: There is a finite number of Netlogon process threads available for NTLM authentication on both the SharePoint WFEs and the domain controllers. When that number is exceeded, authentication requests can fail.
This typically happens in large environments with heavy NTLM traffic, and especially when that authentication occurs across domain trusts. This cuts down significantly on Netlogon service traffic, in most cases relieving the bottleneck. However, keep in mind that Kerberos authentication can still be impacted by MaxConcurrentAPI if there is a significant amount of it requiring PAC verification, or if NTLM authentication for other applications is saturating available threads.
Another option is cutting down authentication traffic by making more resources available anonymously. However, some customizations and branding may store supporting files within a document library where an authentication request must occur for each file request.
The result can be a dozen or more NTLM authentication requests for each page load. Note: this would typically result in a scenario where users in the same domain as the SharePoint servers can authenticate successfully, but users in trusted domains cannot. Logon Failure: The machine you are logging onto is protected by an authentication firewall. The specified account is not allowed to authenticate to the machine. Enable Selective Authentication over a Forest Trust. The cookie contains encrypted key or index to the security token which is created in SharePoint server in Distributed Cache Service.
Name is a mandatory field. Email is a mandatory field Email format is not corrent. Suggestion is a mandatory field. Code SharePoint. Categories x. Improve this question. Robert Kuzma Robert Kuzma 41 1 1 gold badge 1 1 silver badge 3 3 bronze badges. John : How to pass the User name and password to the authentication method?
Also where to pass the domain in you code? The parameters to you method do not include domain. Regards Agasthya — agasthya. Add a comment. Active Oldest Votes. Add AuthenticatedCookie ; Than you can try to execute any method for Lists webservice.
Login UserName, Password ; if result. WriteLine "Exception occured while calling lists. Show this, "Password doesn't match. Improve this answer. Can you pls. To attach the credentials of the current user you would use something like: proxy. Rob Windsor Rob Windsor I have been searching for 2 days now for a method to use those REST services, but I can't figure out a way to obtain an access token.
I want to access a sharepoint server from an iOS mobile app — Radu Simionescu. System will not let me comment John John
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