The DNS server could not find or open the root hints file, Cache.dns, in the %SystemRoot%\System32\Dns directory. Verify ...

The DNS server could not find or open the root hints file, Cache.dns, in the %SystemRoot%\System32\Dns directory.  Verify that this file is located in this directory and that it contains at least one name server (NS) resource record, indicating a root DNS server and a corresponding host (A) resource record for that server.  For more information, see the online Help.