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can't log in in the cms site

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2 posts, 0 answered
  1. Erion
    Erion avatar
    3 posts
    28 Feb 2011
    16 Apr 2012
    Link to this post

    Earlier on the week, I was working on the cms site and it was working fine. 

    The next day, without any change, I get this error when trying to login. 

    Value cannot be null.

    Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

    Exception Details: System.ArgumentNullException: Value cannot be null.

    Source Error: 

    An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

    Stack Trace: 

    [ArgumentNullException: Value cannot be null.]
       Telerik.Sitefinity.Security.Claims.ClaimsManager.ValidateUser(String username, String password) +158
       Telerik.Sitefinity.Security.Claims.SecurityTokenServiceHttpHandler.ProcessRequest(HttpContext context) +1164
       System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +100
       System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

    Any recombination of how to handle this ?  Btw, if I hit the actually site it works fine. Just when when I try to access the sitefinity page, I'll get this error. We are hosting the cms site on windows machine with IIS6. 

  2. Stefani Tacheva
    Stefani Tacheva avatar
    718 posts
    31 May 2017
    19 Apr 2012
    Link to this post

    In order to diagnose the issue and provide you with a solution I need to ask you a few questions. First of all did you make any changes before the error appears? Did you add something to it? Also did you use claims-based authentication of you use forms authentication?
    Additionally, if you try to access the backend page like the URL bellow you will receive an error :

    The error you are getting is a known issue, which is reproduced only on IIS6, but not on IIS7+.

    However, it goes away when you add a slash to it:

    We have logged the issue in PITS, for which you can vote. You can also track its status. A workaround was proposed in the forum thread regarding the issue:

    If you want to use IIS7 you have to switch to claim-based authentication. Here you can find additional information about switching to this authentication.

    All the best,
    Stefani Tacheva
    the Telerik team
    Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items
2 posts, 0 answered