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Invalid postback or callback argument.

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New Member


Posts:11
New Member

    Hi, We're running a lot of DNN installations with a lot of different versions (from 8.04 to 9.9.1)
    When I filter the eventlog on page load exceptions, I can see almost every dnn installation has errors like these on the login page.

    Message:Invalid postback or callback argument. Event validation is enabled using 
    <pages enableEventValidation="true"/> in configuration or 
    <%@ Page EnableEventValidation="true" %> in a page. 
    For security purposes, this feature verifies that arguments to postback or callback events 
    originate from the server control that originally rendered them. If the data is valid and expected, 
    use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or 
    callback data for valida

    StackTrace:

    InnerMessage:Invalid postback or callback argument. Event validation is enabled using 
    <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> 
    in a page. For security purposes, this feature verifies that arguments to postback or callback events
     originate from the server control that originally rendered them. If the data is valid and expected,
     use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or 
    callback data for valida

    InnerStackTrace:

       at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument)
       at System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument)
       at System.Web.UI.HtmlControls.HtmlInputHidden.LoadPostData(String postDataKey, 
       NameValueCollection postCollection)
       at System.Web.UI.HtmlControls.HtmlInputHidden.System.Web.UI.IPostBackDataHandler.LoadPostData
       (String postDataKey, NameValueCollection postCollection)
       at System.Web.UI.Page.<LoadPostDataAsync>d__394.MoveNext()
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at System.Web.UI.Page.<ProcessPostDataAsync>d__393.MoveNext()
    --- End of stack trace from previous location where exception was thrown ---
       at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
       at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
       at System.Web.Util.WithinCancellableCallbackTaskAwaitable.WithinCancellableCallbackTaskAwaiter.GetResult()
       at System.Web.UI.Page.<ProcessRequestMainAsync>d__523.MoveNext()

    So is this some generic 'thing' in DNN with the login control?

     



    New Member


    Posts:11
    New Member

      No one has an idea?
      You are not authorized to post a reply.

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