Customers have difficulty creating users when using the above browser's Enhanced security configuration. But the same works fine on Firefox.
Customer tries to manage user by going to the TIP URL and carrying out the following :
Click on "Users and Groups" then "Manage Users" , everything from this point customer cannot create users or attach roles to Users. Customer is unable to manage the portlet. These appear to be inactive.
Resolving the problem
1. Go to Start - > Administrative Tools - > Server Manager
2. On the main server manager window (right hand side) there is an option IE Enhanced Security Configuration.
3. Click on that to disable the ESC
Below screen shots will give better idea :