The DNS client in Windows Vista

On a Windows Vista-based computer, the DNS client incorrectly creates a negative DNS cache entry for the NetBIOS name of a remote host. This problem occurs when the client computer is configured to use multiple DNS suffixes. When this problem occurs, you may experience the following symptoms:

• The Windows Vista-based computer cannot access the remote host by using the NetBIOS name.
• The NetBIOS name of the remote host cannot be resolved as expected. However, the fully qualified domain name (FQDN) of the remote host can be resolved correctly.
• If you run the ipconfig /displaydns command to display the content of the DNS resolver cache, the command output indicates that a negative DNS cache entry was created for the NetBIOS name of the remote host.
• This problem disappears after you run the ipconfig /flushdns command on the computer. However, the next time that the remote host name is resolved, the incorrect negative DNS cache entry appears again.

A typical scenario of this problem occurs when you enable automatic enrollment for certificates in an Active Directory domain environment. This problem causes automatic enrollment to occasionally fail on the Windows Vista-based client computer. Additionally, the following event is logged in the Application log on the client computer:

Event Type: Error
Event Source: AutoEnrollment
Event Category: None
Event ID: 13
Date: Date
Time: Time
User: N/A
Computer: Computer
Description:
Automatic certificate enrollment for Local system failed to enroll the CertType certificate from CA-name (The RPC server is unavailable. 0x800706ba (WIN32: 1722)).