We have three application servers running Windows Server 2008 R2 (Dev, UAT, and Prod) and configured exactly the same way. On Dev and UAT, the MVC web applications has the usual files with a web.config. On the prod server however, there is an additionalapplication_name.config that gets generated once the site is started. What is this file and it seems to be causing an issue with the app pool. It won't allow the app pool to run as appl pool Identity and only as network service.
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