New set up DHCP Server on Server 2008 R2 won't work, Event-ID 1046

Question

I just set up a 2008 R2 as DC, and DNS. Both worked fine, DNS works fine forward and reverse lookup.

Now I wanted to install DHCP. As soon as the installation of the role is finished, I get this Event-ID Error 1046: Link

When I first set it up there was also a Event-ID 1059 Error: Link

The dhcp server is authorized. I don't know what else I should do. Getting crazy here, hope you guys can help me.

Solution

You need to authorize DHCP servers that are part of an AD domain. This prevents unauthorized DHCP servers from starting on your network.

To authorize the server, from the DCHP console, right click on the DHCP server and select Authorize Server. You have to be logged in as a member of the Domain Admins or DHCP Admins group to do this.