Troubleshooting : Cannot Open the Active Directory Snap-ins

Troubleshooting You Cannot Open the Active Directory Snap-ins

After you have completed the installation of Active Directory, you may not be able to start the Active Directory Users and Computers snap-in, and you may receive an error message that indicates that no authority can be contacted for authentication. This can occur if DNS is not correctly configured. To resolve this issue, verify that the zones on your DNS server are configured correctly and that your DNS server has authority for the zone that contains the Active Directory domain name. If the zones appear to be correct and the server has authority for the domain, try to start the Active Directory Users and Computers snap-in again. If you receive the same error message, use the DCPROMO utility to remove Active Directory, restart the computer, and then reinstall Active Directory.