Yii2 Assets does not work with IIS Server

I install yii2 application with composer on IIS Server with PHP Fast CGI Module. I have also give full control permissions on project_name\assets project_name\runtime project_name\web\

to both IIS_USERS ans IUSER

but when I try to access via browser

PHP code runs well but none of the assets file are loading.

When i checked log the following error occured.

Configuration Exception: The directory is not writable by the Web process C:\inetpub\wwwroot\project_name\web/assets

PS: Same code is running successfully with Apache Server in WAMP Stack.