How to update DNS records?

Question

Active Directory

When setting up new machines and connecting to a domain, a problem occurs. It is impossible to log in with new names. Machines on DHCP are assigned any free address, for example, from a machine that has been online for a long time.
That is, in the end, IP is not equal to the Machine Name, and vice versa.
What a mess, how to update it all?

Answer 1

Most likely, the machine itself is registered in DNS, respectively, the owner of the DNS record is the computer account.
And another computer account cannot overwrite it, because there are no rights.
There are two ways out here:
1. Set up scavenging\aging so that obsolete DNS records are deleted in time.
2. Use a special service AD ​​account in the DHCP server settings, which has the rights to create, delete and modify DNS records. Then, when issuing DHCP server addresses, DNS records will be created not on behalf of each specific machine, but on behalf of this account.

Answer 2

It depends on who distributes IP addresses for you, if it is a domain controller, then you probably have something with the DNS server settings on it.
Alternatively, try changing the lease time of the IP address up or down, depending on the current settings.
Capture requests and responses with Wireshark, analyze who is "telling" what, to whom.
How problematic hosts will behave when executing Win+R-->cmd commands:

ipconfig /release
ipconfig /renew

PS
Try to study the following material .