deploying AntiforgeryToken Error

Question

I am working on an ASP.NET MVC application on my local machine using the Visual Studio 2012 built in IISExpress. After a significant progress I decided to make it available

Answer 1

You should be adding a machine key that is unique to the website/machine combination. It is this machine key that the token generator uses. This means that you should generate a machine key (which you can do here (dead link-beware) and add it to your Web.config file on your machine. You can find more information here: http://msdn.microsoft.com/en-us/library/ff649308.aspx

You can also do this directly from within IIS: http://blogs.msdn.com/b/amb/archive/2012/07/31/easiest-way-to-generate-machinekey.aspx

Answer 2

One thing I noticed is that this error could be caused by having multiple @Html.AntiForgeryToken() pieces of code on the page. I had 2 on my page and once I removed the second one, this error went away.

Answer 3

There I was able to find the answer http://iamdotnetcrazy.blogspot.ru/2013/08/how-to-solve-anti-forgery-token-could.html

Answer 4

I was having a page which was using the partial view. Both contained @Html.AntiForgeryToken() and on removing the @Html.AntiForgeryToken() from the partial page, it worked.

Answer 5

In my case this was an issue with the load balancer not having session persistance turned on for the site.