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Frequently receiving "No authority could be contacted for authentication." or "HTTP 500 internal server errror" RRS feed

  • Question

  • Hi All,

    We have 2003 Domain Controller (abc.com) and patner company have 2003 domain controller(xyz.com) both have external trust between domains and Sharepoint was hosted in abc.com domain and given site access permission to xyz.com domain users.

    Now issue is, When user tried to access sharepoint site from xyz.com domain its giving  "No authority could be contacted for authentication."  or "HTTP 500 internal server errror". However i can able to access the site externally (from Internet ) using the same user name and password.

    Also i can able to access site using xyz.com user name and password in abc.com domain.

    Only i was not able to access the site from xyz.com domain (Intranet).

    I have verified xyz.com domain health and dns health everything looks good.

    Anyone can help me.

    Regards


    Ganga

    Friday, June 15, 2012 9:16 PM

Answers

  • Hi All,

    I have resolved this issue by myself,

    Here is the resolution summary,

    1. We cleaned DNS entry, which is not used in domain controller

    2. Changed the DNS entry in DNS forwarder from CDC domain.

    3. Revalidate the trust.

    4. Disabled unused NIC card in Domain controller.

    5. Restart the CDC domain controllers.

    6. Restart the SharePoint server

    Regards


    Ganga

    Tuesday, June 19, 2012 2:27 PM

All replies

  • Hi Ganga,

    You have mentioned external trust have been configured between abc.com and xyz.com, right?

    Is it 2 way trust or is it one way trust? If users under xyz.com are getting authentication errors please check incoming trust on abc.com. 

    or 

    try to establish 2 way trust on abc.com and check.

    Please let us know your findings, thanks


    Warm Regards, Pratik Vyas | SharePoint Consultant | http://sharepointpratik.blogspot.com/ | Posting is provided "AS IS" with no warranties, and confers no rights

    Friday, June 15, 2012 10:22 PM
  • Hi Pratik,

    I have two way external trust between domains.

    Regards


    Ganga

    Friday, June 15, 2012 10:36 PM
  • Saturday, June 16, 2012 3:07 AM
  • Hi All,

    I have resolved this issue by myself,

    Here is the resolution summary,

    1. We cleaned DNS entry, which is not used in domain controller

    2. Changed the DNS entry in DNS forwarder from CDC domain.

    3. Revalidate the trust.

    4. Disabled unused NIC card in Domain controller.

    5. Restart the CDC domain controllers.

    6. Restart the SharePoint server

    Regards


    Ganga

    Tuesday, June 19, 2012 2:27 PM
  • Hi,

    We were experiencing the same issue for the last few days as well in a very similar scenario where we had a webserver running on domain 3.abc.com, users from domain 3.abc.com could access the web site just fine but when we had users coming from other sub-domains such as 2.abc.com or 1.abc.com they could not access the site and were getting the error message "No authority could be contacted for authentication."

    In our case it turned out to be that our PDC at abc.com domain had an expired certificate and that seemed to stop the trust from all the sub-domains from working and in consequence users coming from 2.abc.com and 1.abc.com trying to authenticate on to the webserver wouldn't be able to access the site.

    Replacing the certificate on the PDC resolved the issue.

    Regards

    Friday, December 28, 2012 12:27 PM
  • I faced the same issue with my MVC3 application(Hosted on IIS 6.0).

    Solution is : Just Unregister and Register The Server in Domain.

     

    Anupam Singh

    Monday, May 12, 2014 2:20 PM