Windows clients not updating dns
A dynamic IP address changes every so often, as compared to a static IP address, which never changes.Normally, a changing IP address does not cause any problem until you try to connect to a local device from outside of your home network.
With a constantly changing IP address, you may be able to connect a few times, but not after the IP address updates.
So why would you want to find your computer on the Internet in the first place?
The Windows Defender Antivirus cloud provides fast, strong protection for your endpoints.
Enabling the cloud-delivered protection service is optional, however it is highly recommend as it provides very important protection against malware on your endpoints and across your network.
I removed it from that server and installed it on the 2k8 one.