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Server cannot set content type after HTTP headers have been sent.

I'm getting this error when using DF to send http post to Dynamic Registration to silently register a new user. I have the "Send reply to Administrator" check box ticked and this error is being sent to my email. The registrations are working fine. But what does it mean and how do we fix it?

Server Error in '/' Application.

Server cannot set content type after HTTP headers have been sent.

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.Web.HttpException: Server cannot set content type after HTTP headers have been sent.

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: 


            

            
[HttpException (0x80004005): Server cannot set content type after HTTP headers have been sent.]

            
 System.Web.HttpResponse.set_ContentType(String value) +12366670

            
 System.Web.UI.Page.SetIntrinsics(HttpContext context, Boolean allowAsync) +226

            
 System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +19

            
 System.Web.UI.Page.ProcessRequest(HttpContext context) +99

            
 System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) +2004

            

            
[HttpException (0x80004005): Error executing child request for /ErrorPage.aspx.]

            
 System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) +2684

            
 System.Web.HttpServerUtility.Execute(String path, TextWriter writer, Boolean preserveForm) +1273

            
 System.Web.HttpServerUtility.Transfer(String path) +146

            
 DotNetNuke.Framework.PageBase. (EventArgs e) +558

            
 System.Web.UI.Page.HandleError(Exception e) +164

            
 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +12309527

            
 System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +12309057

            
 System.Web.UI.Page.ProcessRequest() +119

            
 System.Web.UI.Page.ProcessRequest(HttpContext context) +99

            
 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +913

            
 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +165

            		
        

    



 







 

						

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asked 7/10/2015 
Mark Buelsing159

							
Mark Buelsing

						

						

							

							

						

							
				

				

					
					
						

			
    
				
  • HI, how about creating a separate email completion event to be sent to the admin instead of using that checkbox? 

    [HttpException (0x80004005): Server cannot set content type after HTTP headers have been sent.]

    I think that since the post has already been set successfully, and the email to the admin occurs afterwards, it's not able to set the content type to be included in the email? I'm not sure but it looks that way.

    david to - Chad Nash 7/17/2015
  • I'll try this suggestion when I get a chance. But maybe I will start by unchecking the "Send to Admin" checkbox and see if the errors continue to appear in the Event Manager. - Mark Buelsing 7/17/2015
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						Data spring and all related items have been done for the hosting of the items for the people. The changes of the patty is ensured in this article for the prospects of the joyful  items for the members in the field.
						

						
					

				

				

					
					
						

							
answered 4/13/2019  Hatfield  2

							
Hatfield 

						

						

							

							

						

							
				

				

					
					
						

			
    

			

		

							
				

			
					
				

			
		

			
    
				
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