Hello, I am using ArcGIS 10.1 with Javascript 3.2, and am hosting my application on amazon EC2. I am also using a web adaptor.
I had some issues with my local install which I resolved by setting up the proxy page. However, I am not sure how to do that on EC2 instance. I have tried using the following url but it does not work: http://<ElasticIPAddress>//<proxy folder>/proxy.jsp. This returns a n error status of 404.
Can you check if the Windows Firewall is enabled on your Amazon machine? I believe it is enabled by default, and I have seen proxy page issues occur because of this.
