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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Help! Server cannot append header after HTTP headers ...Help! Server cannot append header after HTTP headers ...
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8/18/2010 4:49 AM
 
sten nilsson

Joined: 2/12/2004
Posts: 34

Running DNN 5.2.1 . Often we receive the following error and must restart the site. How can we solve it?

thanks in advance
Sten

Server Error in '/' Application.

Server cannot append header 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 append header 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 append header after HTTP headers have been sent.]

            
   System.Web.HttpResponse.AppendHeader(String name, String value) +2857733

            
   DotNetNuke.HttpModules.Compression.CompressingFilter.WriteHeaders() +51

            
   DotNetNuke.HttpModules.Compression.GZipFilter.Write(Byte[] buffer, Int32 offset, Int32 count) +21

            
   System.Web.HttpWriter.Filter(Boolean finalFiltering) +8758019

            
   System.Web.HttpResponse.Flush(Boolean finalFlush) +625

            
   System.Web.HttpResponse.Flush() +20

            
   System.Web.HttpWriter.WriteUTF8ResourceString(IntPtr pv, Int32 offset, Int32 size, Boolean asciiOnly) +8651524

            
   System.Web.UI.HtmlTextWriter.WriteUTF8ResourceString(IntPtr pv, Int32 offset, Int32 size, Boolean fAsciiOnly) +49

            
   System.Web.UI.ResourceBasedLiteralControl.Render(HtmlTextWriter output) +42

            
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27

            
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99

            
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25

            
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134

            
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19

            
   System.Web.UI.Page.Render(HtmlTextWriter writer) +29

            
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27

            
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99

            
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25

            
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1266

            		
        

    


										

									

										 
									

								

							

						

					

						
					

						

							

								

									

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											8/18/2010 7:14 AM
										
 
									

								

							

						

					

						

							

								

									

										Colm Ryan
									

								

							

								

							

								
www.3rdi.ie
Joined: 1/5/2006

									Posts: 160
								

							

						

							

								

									

										
									

										

											

												

													

														
													

												

											

										

									

								

							

								

									

										

											Hi Sten



 I'd check your HTTP compression settings both in DNN and in IIS because of the GZip message in the stack trace. You have the option of upgrading your DNN install as it could be something that has been resolved or If you can pin it down to a specific page then you might have a module that is not behaving.

 Rgds

Colm
										

											
Colm Ryan Director 
3rd i IT and Business Services Limited 


www.actravia.com
Registration and Booking Solutions for Dotnetnuke

www.3rdi.ie
IMCA Registered Management Consulting Practice. Business and IT Strategy, IT Project Management and Product Development
										

									

										 
									

								

							

						

					

				

			

				

					

						

							

								

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