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<p>We have one DHCP server with configured DHCP Superscope that contains 15 scopes.<br style="padding: 0px; margin: 0px;" />As we had some DHCP issues in our VLAN environment, we had to remove all 15 scopes from the superscope. When the last scope was removed from the Superscope, superscope was deleted automatically.<br style="padding: 0px; margin: 0px;" /><br style="padding: 0px; margin: 0px;" />Now, everything is working fine, but after the DHCP server or service is restarted, users complained that they still experience that &#8216;old&#8217; DHCP issues when physically changing VLAN&#8217;s. More <a href="http://wincert.net/?p=167" target="_blank">HERE</a>.</p>
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<p>Therfore, I&#8217;ve checked the DHCP and I was more than surprised when I&#8217;ve seen that all DHCP scopes are back in the Superscope. As if nothing was done before the server restarted.<br style="padding: 0px; margin: 0px;" /><br style="padding: 0px; margin: 0px;" />It looks like that DHCP was restored or like DHCP superscope was recreated. I am using DHCP server with Windows Server 2008 R2 OS.</p>
<p><span class="Apple-style-span" style="color: #008000;">Solution:</span></p>
<p>Delete the DHCP Superscope and you should get the notification that child scopes won&#8217;t be deleted in this process.</p>
<p>It is not necessary to recreate scopes. You can simply delete the superscope and all child scopes will remain active.</p>
<p><span style="color: #993300;"><span style="text-decoration: underline;">Note</span>:</span> This applies to Windows Server 2008 R2. If you plan to try this with any previous Microsoft DHCP server, please make a backup of your DHCP database.</p>