Error Message:

DNS Server encountered file name filename exceeding maximum file path length, in file filename, line number.

Explanation:

The specified file name in the error message exceeds the 256 character limit.

User Action:

Go to the Systemroot\System32\Dns folder and then, using Notepad, open the specified file and locate the specified line. Rename the file that exceeds the maximum file path length so it contains 256 or fewer characters. Stop and restart DNS.