Is there any memory restrictions on an ASP.Net application?

Question

I have an ASP.Net MVC application that allows users to upload images. When I try to upload a really large file (400MB) I get an error.

I assumed that my image proces

Answer 1

There can be memory limits configured in either the web.config or machine.config, or both.

In web.config the section is:

In machine.config the section can also be the httpRunTime section, similar to:

The aspnet process can also be limited to a percentage of the total memory using the processModel section, see:

http://msdn.microsoft.com/en-us/library/7w2sway1.aspx

I've encountered similiar problems to the one you described cause by those settings.
In particular the ProcessModel memorylimit attribute.