ASP.NET exception Event ID 1314

an unhandled exception has occurred event code 4011

On one of my web front-end servers, I was receivning this error. The page was intermittently having trouble loading from one node of the cluster. I was seeing generic Windows SharePoint Error pages, but mostly 403 errors.

Adding the servername\Users Read (Read & Execute, List Folder Contents, Read) permissions to the \bin folder in the IIS virtual directory solved the issue for me.

P:\www\pages\wss\VirtualDirectories\site\bin