Impossibile risolvere il nome wpad

Se non si riesce a risolvere il nome wpad, verificare questa feature:

Windows 2000 Server

• Verificare che ci sia l'errore in wvent viwer:

EventID 6268

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.rvmgroup.local. 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.

Cancellare

wpad

Dalla chiave di registry

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\DNS\Parameters\GlobalQueryBlockList

Riavviare il service DNS

Riferimenti

• The global query block list and Event ID 6268

Windows 2008

• L'errore in event viewer è:

Log Name:      DNS Server
Source:        Microsoft-Windows-DNS-Server-Service
Date:          3/20/2012 2:38:12 PM
Event ID:      7600
Task Category: None
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      METSRV01.metrica.priv
Description:
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.metrica.priv. 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
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-DNS-Server-Service" Guid="{71A551F5-C893-4849-886B-B5EC8502641E}" EventSourceName="DNS" />
    <EventID Qualifiers="32768">7600</EventID>
    <Version>0</Version>
    <Level>3</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2012-03-20T13:38:12.000Z" />
    <EventRecordID>327</EventRecordID>
    <Correlation />
    <Execution ProcessID="0" ThreadID="0" />
    <Channel>DNS Server</Channel>
    <Computer>METSRV01.metrica.priv</Computer>
    <Security />
  </System>
  <EventData Name="DNS_EVENT_GLOBAL_QUERY_BLACKLIST">
    <Data Name="param1">wpad.metrica.priv.</Data>
    <Data Name="param2">wpad
isatap</Data>
  </EventData>
</Event>

• Disablitare la blocklist con:

dnscmd ServerName /config /enableglobalqueryblocklist 0 

• Verificare che la bloclist sia disattivata con:

dnscmd ServerName /info /enableglobalqueryblocklist

Riferimenti

• Managing the Global Query Block List