welcome to XRM blog

Keep in touch with latest CRM/ERP articles

To remain competitive your organisation must be efficient across the business process spectrum. To do so you need to take sound decisions based on a balance between the cost and risk. To do so you will be heavily dependent on your content management in itself needs...

image
Blog

Error DotNetNuke.Web.Mvc.MvcHttpModule.SuppressXFrameOptionsHeaderIfPresentInConfig during DNN Upgrade from Current Version - 07.03.02 to Version 09.XX.XX

By Akash Kumar Choudhary on 12/12/2018
If you are upgrading the DNN from 07.03.02 to Version 09.XX.XX and post upgrade you are getting the following error 

Object reference not set to an instance of an object.
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.NullReferenceException: Object reference not set to an instance of an object.

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: 



DotNetNuke.Web.Mvc.MvcHttpModule.SuppressXFrameOptionsHeaderIfPresentInConfig() +327
DotNetNuke.Web.Mvc.MvcHttpModule.Init(HttpApplication context) +13
System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +579
System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +164
System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +266
System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +340


System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +523
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +107
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +688



Then one of the reason can be that <customHeaders> tag is not correct in the web.config. If it looks something like following then it is not correct. 

<httpProtocol>
<customHeaders>
<clear />
<remove name="X-XSS-Protection" />
<remove name="X-Frame-Options" />
<add name="X-XSS-Protection" value="1; mode=block" />
<add name="X-Frame-Options" value="SAMEORIGIN" />
</customHeaders>
</httpProtocol>



Replace it with following <customHeaders> 
<httpProtocol>
<customHeaders>
<remove name="X-Powered-By" />
</customHeaders>
</httpProtocol>

This will do the trick. I hope this helps.
.Net
DotNetNuke
.Net; DNN
Blog Calendar
Blog Calendar List
2020 Sep  14  3
2020 Aug  18  3
2020 Jul  9  1
2020 Jun  20  3
2020 Apr  12  3
2020 Mar  11  2
2020 Feb  22  5
2020 Jan  22  7
2019 Dec  15  4
2019 Nov  11  1
2019 Jan  31  3
2018 Dec  33  4
2018 Nov  66  3
2018 Oct  12  3
2018 Sep  237  11
2018 Aug  6  2
2018 Jun  11  1
2018 Jan  54  2
2017 Sep  552  5
2017 Aug  17  1
2017 Jul  17  2
2017 Jun  52  2
2017 May  21  1
2017 Apr  33  2
2017 Mar  118  4
2017 Feb  433  4
2016 Dec  178  3
2016 Nov  385  8
2016 Oct  247  10
2016 Sep  362  6
2016 Aug  39  1
2016 Jun  1770  6
2016 May  104  3
2016 Jan  70  2
2015 Dec  392  6
2015 Nov  4  1
2015 Oct  13  1
2015 Sep  1345  6
2015 Aug  13  1
2015 Jul  126  2
2015 Jun  10  1
2015 May  20  1
2015 Apr  28  3
2015 Mar  78  3
2015 Jan  5223  4
2014 Dec  17  1
2014 Nov  2219  4
2014 Oct  63  1
2014 Sep  106  2
2014 Aug  4248  1
2014 Jul  46  2
2014 Apr  2468  12
2014 Mar  288  19
2014 Feb  237  8
2014 Jan  1510  16
2013 Dec  21  2
2013 Nov  640  2
2013 Oct  250  3
2013 Sep  11  1
2013 Aug  38  3
2013 Jul  208  1
2013 Apr  49  6
2013 Mar  1861  10
2013 Feb  309  4
2013 Jan  265  2
2012 Nov  35  2
2012 Oct  456  10
Tag Cloud
Interested in our services? Still not sure about project details? get a quote