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Event 8012 - The system failed to register pointer (PTR) resource records (RRs) for network adapter

Hi

Getting Event 8012 - event log entry shows correct DNS server addresses but just won't register the PTR record.

Have checked all settings for DNS and DHCP to check dynamic updates configured etc and all seems okay.

Also checked reverse lookup zone for that range exists and it does.

Getting same on computers in office on LAN and those connected via VPN.

Any pointers on what I can do to diagnose / fix?

Thanks

 The system failed to register pointer (PTR) resource records (RRs) for network adapter
 with settings:
    
            Adapter Name : {F09E5366-B12A-4DC8-B733-D75454A158B4}
            Host Name : L12345
            Adapter-specific Domain Suffix : mydomain.local
            DNS server list :
               192.168.2.2, 192.168.1.1
            Sent update to server : 192.168.2.2:53
            IP Address :
              192.168.252.1
    
 The reason that the system could not register these RRs was because the DNS server refused the update request. The cause of this could be (a) your computer is not allowed to update the adapter-specified DNS domain name, or (b) because the DNS server authoritative for the specified name does not support the DNS dynamic update protocol.
    
 To register the DNS pointer (PTR) resource records using the specific DNS domain name and IP addresses for this adapter, contact your DNS server or network systems administrator.

and

 The system failed to register pointer (PTR) resource records (RRs) for network adapter
 with settings:
    
            Adapter Name : {940AA4D7-D6A8-4166-AE43-C810E4B2278A}
            Host Name : D12345
            Adapter-specific Domain Suffix : mydomain.local
            DNS server list :
               192.168.1.1, 192.168.2.2
            Sent update to server : 192.168.1.1:53
            IP Address :
              192.168.1.14
    
 The reason that the system could not register these RRs was because the DNS server refused the update request. The cause of this could be (a) your computer is not allowed to update the adapter-specified DNS domain name, or (b) because the DNS server authoritative for the specified name does not support the DNS dynamic update protocol.
    
 To register the DNS pointer (PTR) resource records using the specific DNS domain name and IP addresses for this adapter, contact your DNS server or network systems administrator.






windows-dhcp-dns
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DSPatrick avatar image
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DSPatrick answered DarrenRose-2607 commented

I'd check if you have created the reverse lookup zone 252.168.192.in-addr.arpa for record 192.168.252.1

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· 1
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Yes I have - as stated in my original post - "Also checked reverse lookup zone for that range exists and it does"

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DSPatrick avatar image
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DSPatrick answered DarrenRose-2607 commented

Might also check the options here.

131675-image.png


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Yes that is set to Secure only - and I also tested it with Nonsecure and secure just to see if that worked - it didn't

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DSPatrick avatar image
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DSPatrick answered DarrenRose-2607 commented

What's the history here? new install or what was changed?


· 3
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Existing setup and just noticing that DNS playing up (has been for a while really), so started looking into event logs and trying to work out why, think it has been more of a problem since covid and more staff working from home via VPN

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DSPatrick avatar image DSPatrick DarrenRose-2607 ·

That's sort of what it looked like with the two examples of the clients getting addresses on subnets other than where the DNS servers are located..




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Actually my mistake - was a typo on second example

First example range of .252. is the range given out to VPN users

Second example IP should have been 1.14 rather than 10.4 - so is in correct range of that office

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DSPatrick avatar image
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DSPatrick answered DarrenRose-2607 commented
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Initially I thought yes but after doing some more tests this PM it is affecting both

Have done "Test-NetConnection 192.168.1.1 -Port 53" to make sure DNS port is open and that is fine

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DSPatrick avatar image DSPatrick DarrenRose-2607 ·

I'd suggest starting a case here with product support.
https://support.serviceshub.microsoft.com/supportforbusiness


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Will give that a try - thanks

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Ignore last message - will continue asking on forums I think rather than having to pay £199

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LimitlessTechnology-2700 avatar image
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LimitlessTechnology-2700 answered DarrenRose-2607 commented

Hello DarrenRose,

I would look into the reverse lookup zone.

  1. Check if you have created the reverse lookup zone 252.168.192.in-addr.arpa for record 192.168.252.1 (same for the 192.168.10.14)

  2. Check what is the type of dynamic update type, choose specifically "Nonsecure and secure" and check if it could work.

  3. If needed, you may try to manually create the PTR record in the reverse lookup zone.

More details here: https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-2000-server/cc961414(v=technet.10)

Hope this helps narrow it down,
Best regards,

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Hi,

1) As per original post and first reply to DSPatrick yes the reverse lookup zone exists

2) As per second reply to DSPatrick it was secure (as it should be) to Secure Only - but tried it with Nonsecure and Secure and still didn't work

3) This works but is pointless as DHCP so address changes

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