Hi,I happen to have this simple problem.I am trying to achieve a SSO implimentation across my websites so i am using the machine key attribute to do so.now the trouble starts here as the website the user logs in is on the .net 1.1 framework and the website it it navigating to is .net 4.0.I have share the same machine-key across both the application . It works fine in my testing environment but as i move to the deployment server , Go to the complete details ...