Changing authentication scheme: active directory to IRC application security To change the authentication scheme from Active Directory to Application Security: In the Change Authentication Scheme to option field, select the Application Security. Specify the user name and password of the Administrator. Re-enter the password in the Confirm Password text box. Click Update. Note: For Certification Manager, provide IRC url, for example [Http://MachineName/]. When you change the authentication scheme from Active Directory to Application Security: The existing user mapping changes to the default User Login name field. Users are re-mapped using the default mapping after re-extraction .