IsolateApps causes Decryption key specified has invalid hex characters

Question

I working on a MVC 4 site which has uses Authentication. The site requires that I specify the Machine Key values. I did this via the IIS interface having deselected the \"au

Answer 1

This can be fixed by adding the machineKey line into your web.config, and specifying your keys as shown below (use your own key though of course, this one is easily guessable):