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I'm accepting these two answers because it gets me in the right direction, &nbsp;I'm not sure when we are going to try again with the scope change.
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I'm accepting these two answers because it gets me in the right direction,  I'm not sure when we are going to try again with the scope change.

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We are a Windows 2008 domain environment. <br />
Our dhcp range is 192.168.1.50 to 192.168.1.200 subnet mask of 255.255.255.0<br />
<br />
We have basically run out of ip addresses<br />
We changed our subnet mask to 255.255.252.0 which now gave us almost 750 more ip addresses. <br />
We then changed our dhcpk scope to 192.168.0.20 to 192.168.0.240. <br />
<br />
After rebooting Windows 7 client the computer did not receive an address. <br />
After an ipconfig /release and renew it received a new address. <br />
<br />
After rebooting the clients lose the address again.<br />
<br />
Tried multiple clients with same result. <br />
<br />
Removed scope and recreated the original scope still using the new subnet mask abd everything works fine. <br />
<br />
Is there something needed if dhcp server is 192.168.1.20 but giving out addresses on 192.168.0.x &nbsp;<br />
All the ip addresses fall within the subnet mask. <br />
Any thoughts are appreciated
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We are a Windows 2008 domain environment. 
Our dhcp range is 192.168.1.50 to 192.168.1.200 subnet mask of 255.255.255.0

We have basically run out of ip addresses
We changed our subnet mask to 255.255.252.0 which now gave us almost 750 more ip addresses. 
We then changed our dhcpk scope to 192.168.0.20 to 192.168.0.240. 

After rebooting Windows 7 client the computer did not receive an address. 
After an ipconfig /release and renew it received a new address. 

After rebooting the clients lose the address again.

Tried multiple clients with same result. 

Removed scope and recreated the original scope still using the new subnet mask abd everything works fine. 

Is there something needed if dhcp server is 192.168.1.20 but giving out addresses on 192.168.0.x  
All the ip addresses fall within the subnet mask. 
Any thoughts are appreciated

clients keep losing dhcp address

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).