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 across the Local network, I created a virtual directory from visual studio. I can log in but when I try to register a new user. I get the error below.

The anti-forgery token could not be decrypted. If this application is hosted by a Web Farm or cluster, ensure that all machines are running the same version of ASP.NET Web Pages and that the configuration specifies explicit encryption and validation keys. AutoGenerate cannot be used in a cluster.

I generated a new machine key from (ASPNET resources) and placed it in my configuration file but is not still working.Can someone suggest a solution?

Answer 1

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

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

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 4

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 5

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