Step 1: Open IIS and click the server name
Step 2. Double click “ISAPI and CGI Restrictions”
Step 3. Right click ASP.NET v4.0.30319 and select “allow”
1. Go to Start > All Programs > Administrative Tools > Services.
2. In the services list, right-click World Wide Web Publishing Service, and then click Stop (to stop the service), Start (to start it after it has been stopped), or Restart (to restart the service when it is running).