How to fix the Event ID 1056, System: DHCP, DHCP Running on a DC with Default Credentials

Question

_{Friday, February 10, 2017 7:21 AM}

Dear Support,

I would like to know the way to fix this issue. Please kindly advise.

I have read through the KB as below.
https://support.microsoft.com/en-us/help/282001/event-id-1056-is-logged-after-installing-dhcp

In the KB , the solution is to run the DHCP Server service under a specified user account that does not have the ability to overwrite the DNS records. I don't understand why need to do it, could you explain it more?

Thanks

Kidd

All replies (14)

_{Friday, February 10, 2017 8:28 AM}

Hi Nedic,

It means that I need to create a normal domain user account , then using the above commands to apply. Am I correct ?

May I have know this action will affect the DHCP / DNS function , such as cannot update dns record ?

Thanks
Kidd

_{Friday, February 10, 2017 8:37 AM}

Hi Nedic,

In our environment , we have several DCs are running DHCP and DNS server in same server. But I could not find this error. Those servers have not set dnscredentials for DHCP server but they are working fine.

Thanks
Kidd

_{Friday, February 10, 2017 9:18 AM}

Hi Nedic,

I got confused on it, as some post teach me to add the new create account into group "DnsUpdateProxy" in AD.

http://www.networkedminds.com/setup-dhcp-dynamic-dns-server-2012-r2/
https://youtu.be/Tukvch4Qtuc

Thanks
Kidd

_{Friday, February 10, 2017 9:57 AM}

Hi Nedim

Not yet , as I need to fully understand what is purpose of this action before apply the change.

Thanks
Kidd

_{Monday, February 13, 2017 4:22 AM}

Hi Kidd,

Here is description about event ID 1056 for your reference:

DHCP Server in DCs and DNS Registrations

https://blogs.technet.microsoft.com/stdqry/2012/04/03/dhcp-server-in-dcs-and-dns-registrations/

Best Regards

John

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_{Monday, February 13, 2017 6:33 AM}

Hi Nedim,

Thank you for your information. I study those information first.

Thanks
Kidd

_{Monday, February 13, 2017 6:43 AM}

Hi John,

May I know the event ID 1056 and DHCP Server installed on Domain Controller running with default DNS dynamic registration credentials are refering to the same issue and the solution is supplying proper credentials to DHCP server can perform updates on behalf of its DHCP clients to DNS server ? We have performed AD Health Check before and the report state out we have those issues.

But in our environment , we have several DCs are running DHCP and DNS server in same server. But I could not find event ID 1056.Those servers have not set dnscredentials for DHCP server but they are working fine.

Thanks
Kidd

_{Monday, February 13, 2017 7:26 AM}

Hi Nedim,

Checked and I found the DHCP server was logged on as network service.
If I apply the normal domain user without any dns admin rights as a credentials , how come the normal domain user to can perform updates on behalf of its DHCP clients to DNS server?

Thanks
Kidd

_{Monday, February 13, 2017 8:09 AM}

Hi Nedim,

I will do it in UAT environment and keep monitor for a while.
May I know any impact if I apply this change ?

Thanks
Kidd

_{Monday, February 13, 2017 8:21 AM}

Hi Kidd,

Microsoft recommends to use DNSCredentials for secure updates when you have everything on one server. 

_{Monday, February 13, 2017 9:00 AM}

Hi Nedim,

Secure updates is referring to what ? Could you explain more ?

Thanks
Kidd

_{Monday, February 13, 2017 9:42 AM}

Hi Nedim,

Thank you for your reply.

Thanks
Kidd

_{Monday, February 27, 2017 9:46 AM}

Hi Kidd,

Was your issue resolved?

If you resolved it using our solution, please "mark it as answer" to help other community members find the helpful reply quickly.

Best Regards

John

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If you have feedback for TechNet Subscriber Support, contact [email protected].

_{Tuesday, May 9, 2017 1:30 PM}

Hi,

Any news here, can you mark it as answer if it helped to close the thread, or let us know if you need any further assistance

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Please remember to mark the replies as answers if they help.
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