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Try setting the option to DHCP ONLY
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You need to authorize your DHCP server service with an Active Directory.
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You need to authorize your DHCP server service with an Active Directory.

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I dis autheriZe it. It does hand out dhcp
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I dis autheriZe it. It does hand out dhcp

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I believe JEREMYNO was referring to MAC address. &nbsp;Does the machine you are setting the reservation for have that exact MAC address?<br />
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You can run GETMAC from a CMD window on your WSUS server to show the MAC address - make sure you get the right one as several will be listed.<br />
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I believe JEREMYNO was referring to MAC address.  Does the machine you are setting the reservation for have that exact MAC address?

You can run GETMAC from a CMD window on your WSUS server to show the MAC address - make sure you get the right one as several will be listed.



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So when I go to make a reservation on the DHCP server I get an error.<br />
Here is the error on a screenshot<br />
Server is server 2003 r2<br />
<a href="https://filedb.experts-exchange.com/incoming/2011/10_w40/508554/dhcp.png" target="_blank" class="file-inline" title="DHCP server error (29 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>dhcp.png</a>
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dhcp.png

So when I go to make a reservation on the DHCP server I get an error.
Here is the error on a screenshot
Server is server 2003 r2

I need to set up a reservation on a DHCP server and I am getting an error

The Dynamic Host Configuration Protocol (DHCP) is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol. DHCP allows for computers to be configured automatically to communicate with each other over an IP network without the need for manual setup by a network administrator. The implementation of DHCP relies on a DHCP server to hand out network configuration information to DHCP-capable clients that request an IP address (and other information required or useful in communicating with other devices on an IP network). In addition to an IP address, common configuration information served over DHCP includes a default gateway, subnet mask and DNS sever(s).

DHCP

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.