I am running IIS 8.5 on a Windows 2012 R2 Core box. I created a new application pool called \"MyNewAppPool\". I have a website instance, called \"MyNewWebsite.com\" running in
You won't ever find the synthesised application pool identity in the permissions search dialogue. Just type in the name of the pool identity like this:
Via GUI:
The click the Check Names button:
Via Command Line:
Alternatively you can use ICACLS
from an administrator command line/Powershell:
icacls c:\wwwroot\mysite /grant "IIS AppPool\MyNewAppPool":(CI)(OI)(M)