500 Internal Server Error requesting any resource files (css, js, images) in an .Net MVC 3 site
UPDATE: Things I tried - see answer below for solution I installed a fresh MVC3 site and it served up the resources properly. That eliminated the machine.config settings as a problem. I then when section by section in the web.config to see if any particular changes in web.config caused the problem. When the configs were identical, the fresh site still worked and the old site was still broken. I uninstalled IIS, reinstalled IIS, and then installed apps again in an attempt to clear any settings that were lingering around. Still borked. I then used publish (instead of msi deploy) to new directory