Tag Archives: enumeration

Event ID 1026

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KB ID 0000134 

Problem

Event ID 1026

The DNS server was unable to create a name in memory for name “<host name>” in zone “<zone name>” in the Active Directory. This directory name is ignored. Use the DNS console to recreate the records associated with this name or check that the Active Directory is functioning properly and reload the zone. The event data contains the error. 

DNS cant be updated with the name of something thats trying to add itself to DNS.

Solution

  1. This is due to DNS nodes that have characters in them windows does not like (e.g. ! ‘ etc) you can delete them in the following way
  2. Start > run > dsa.msc
  3. View > Advanced Features
  4. Domain name > System > Microsoft DNS
  5. Note any records for reverse DNS zones that longer exist should be removed from here at this point
  6. Then locate then offending entries (they will have a type of ‘dnsnode’) and delete them.

However if you have machines on the network that are going to “re-register” themselves (e.g Apple Mac’s Firewalls and routers – then the problem will reoccur)

If the problem does reoccurs then you need to go to the DNS server and ALLOW names it does not allow by default (note this is not recommended by Microsoft) If you want to do this.

 

      • On the DNS server Start > Administrative tools > DNS
      • Right click the server name > properties > Advanced
      • Change the Name Checking section to “All Names”
      • Restart the DNS Server service (or right click the Server name > All tasks > Restart

 

Related Articles, References, Credits, or External Links

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Event ID 4004 and 4015

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KB ID 0000133 

Problem

Event 4004 and 4015

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 “”. The event data contains the error.

and

The DNS server was unable to complete directory service enumeration of zone .. This DNS server is configured to use information obtained from Active Directory for this zone and is unable to load the zone without it. Check that the Active Directory is functioning properly and repeat enumeration of the zone. The extended error debug information (which may be empty) is “”. The event data contains the error.

If the 4004 and 4015 events only appear at start up, you get these events because your zones are stored in AD and you only have one Domain Controller. AD cannot start with DNS, and when DNS starts, because AD has not started, DNS cannot load the zones in AD. The error goes away if you have two or more DCs with DNS installed, or if you use standard primary zones.

Solution

Add a second domain controller or Ignore the error.

Related Articles, References, Credits, or External Links

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