Internal Server Error with web.config ipSecurity

Question

This is my web.config which has some tags for blocking Ipaddress

 
    ...
 
 

        

Answer 1

For others that run into this issue. The cause of the issue is that Feature Delegation doesn't allow the feature to be managed by web.config.

To Fix:

Verify that the Feature is enabled for web.config management

• In IIS 7, click on the root server
• Double click Feature Delegation (under management)
• Scroll down to IPv4 Address and Domain Restrictions
  • Change the delegation to Read/Write (in my case it was Read Only, which was the issue)

Hope this helps someone else.