I\'m assuming this is possible in the applicationhost.config file but I did not see a parent paths setting.
How do you allow parent paths for a specific site running und
Browse to C:\Documents and Settings\$your user name$\My Documents\IISExpress\config
Open applicationHost.config
Find the
section
Change the
section to the following…
By default it only had the cache and empty limits bits but feel free to adjust any parameters you don't want.
Save and restart iis express.