I have a problem with POST-requests to all of my Controller-methods of my ASP.Net MVC3 application. If I start my Website locally on my machine, I can access the required data using both GET- or POST-requests. On the host only GET-requests are working, i.e. if I call the same controller-method using POST all the parameter values are null. The method itself is called and I checked the value of Request.HttpMethod - it is correctly set to POST. Also the values of Request.Url.AbsolutePath, Request.Url.Authority, Request.Url.... seem to be correct. But all the request-parameters (e.g. Request["FIRSTNAME"]) are null in the case of POST. Has anyone any idea, what could cause this strange effect. Thanks in advance.