500.19 on IIS 7, Cant log on locally

Sometimes it causes by changing administrator password or changing user access. After that application pool cannot access to local user. One of the most stupid solution for this problem is remove website and application pool then make another website. This solution helped me.

It actually was a secpol.msc Policy What was blocking the web access. The ServiceAccount wasn't a Service one.

As in the edit that I posted IT Security gave me the privileges to set it a*s a Service Account*, but that alone just wouldn't do the trick.

In the Advanced Settings of the webSite

Physical Path Credentials Logon Type, Batch logonMethod was selected.

And the service account still wasn't with the privileges to run as a Batch Process.

And that was it.

Not only the service account, but also The Run as a Batch Job was necessary.

The accepted answer didn't work for me.

But when I followed the below steps, my issue was resolved:

1. Go to your IIS manager.
2. Click on Sites
3. Right click on Default websites, Go to Manage Website and then click on
   Advanced Settings
4. Set your physical path credential to Specific user with credentials
5. Restart IIS

Note: You may also need to reenter the credentials in the application pool, if the system password has been changed recently.