خطا در DNS SERVER

دوستان سلام .یه مدتی هست که یکی از dns server های من دچار مشکل شده وقتی log هاشو چک می کنم با این خطاها مواجه میشم
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The global query block list is a feature that prevents attacks on your network by blocking DNS queries for specific host names. This feature has caused the DNS server to fail a query with error code NAME ERROR for wpad.hanyco.net. even though data for this DNS name exists in the DNS database. Other queries in all locally authoritative zones for other names that begin with labels in the block list will also fail, but no event will be logged when further queries are blocked until the DNS server service on this computer is restarted. See product documentation for information about this feature and instructions on how to configure it.

Below is the current global query block list (this list may be truncated in this event if it is too long):
wpad
isatap.
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The DNS server has encountered a critical error from the Active Directory. Check that the Active Directory is functioning properly. The extended error debug information (which may be empty) is "000020EF: SvcErr: DSID-0208017F, problem 5012 (DIR_ERROR), data -1090". The event data contains the error.
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