To be honest, I\'ve tried to turn a dirty trick on IIS and just when I thought that I was going to get away with it, I realized my workaround doesn\'t work. Here\'s what I\'
This maybe not a usefull solution for OP but it concerns the same "error" message.
We are hosting PHP pages on IIS8.5 with .NET 4.5 installed correctly.
We make use of the preload functionality to make sure our application is always responsive across the board.
After a while we started getting this error at random.
In the web.config : I put skipManagedModules to true, -> don't do this!
...
Although website is php, the routing to the paging is managed by the modules!!!