Access denied trying to run IISReset logged in as a local aministrator

Even with UAC disabled, are you using an administrative command prompt?

The security token for administratively running IISRESET isn't there under a normal command prompt even if you've moved the UAC slider to "Never Notify".

You can follow these steps:

1. Open PowerShell
2. Type Regedit then hit enter
3. Browse to HKEY_LOCAL_MACHINE\SOFTWARE\MicrosoftWindows\CurrentVersion\policies\system
4. Double click on EnableLUA
5. Change the Value data to a 0
6. Click OK, then reboot the server

to completely disable UAC, and then try running IISRESET from a normal cmd prompt, but it isn't good practice to completely disable UAC on any server.

CREDIT: http://www.nimbo.com/blog/how-to-disable-user-account-control-in-windows-server-2012/