IIS Express - 500.19 Cannot read configuration file - because it's looking at the wrong path

Question

I recently renamed my root TFS folder from D:\\TFS\\systemstfs to D:\\TFS\\sys because one of the project\'s paths was too long for Windows. Now, when

Answer 1

Turns out I had to edit %USERPROFILE%\Documents\IISExpress\config\applicationhost.config in the following way -

I don't know how this file gets changed "properly", but editing it manually worked fine.