Hello
Thank you for your question and reaching out.
Please verify that the computer accounts for these servers are listed with Read, Write, and Special permissions on the Security tab of the corresponding A record. If not, reset the zone to secure, delete the A records, and then run ipconfig/registerdns again.
Verify that the reverse lookup zone for record 192.168.252.1 has been created.
Check the type of dynamic update, select "Nonsecure and Secure" specifically, and see if it can be done.
You can attempt manually creating the PTR record in the reverse lookup zone if necessary.
[https://learn.microsoft.com/en-us/answers/questions/549815/event-8012-the-system-failed-to-register-pointer-(](https://learn.microsoft.com/en-us/answers/questions/549815/event-8012-the-system-failed-to-register-pointer-()
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